IILIIA" SERVICE MANUAL GENESIS 32X(VAO,VA1) I MEGA DRIVE 32X NO. 012 ISSUED JUNE, 1995 CONTENTS 1. SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 2 2. IDENTIFYING PARTS .. · · .... · · · · .. · · · · · · · · · · · .. · · · .. · · · · .. 3 3. ACCESSORIES· · · · .. · .. · .... · · · · · · · · · · .. · .. · · · · · · · · · .. · · · · · 3 4. DISASSEMBLY············································ 4 5. ADJUSTMENT···~········································· 5 6. BLOCK DIAGRAM · · .. · ............ · · · · · .... · .. · .... · · .. · · 7 7. SCHEMATIC & CIRCUIT BOARD DIAGRAMS · · · · · · · · · · · · · · · · 9 8. PARTS SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19 9. EXPLODED VIEW & PARTS LIST · · · · · · · · · · · · · · · · · · · · · · · · · · 34 9-1. Exploded View · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 34 9-2. Mechanical Parts List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 35 9-3. Electrical Parts List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 35 9-4. Accessories/Package List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38 Sega Enterprises, Ltd. BEFORE REFERRING TO THE SERVICE MANUAL Since the circuit of the Extension Unit used in the GENESIS 32X has been integrated on the main circuit board, an Extension Unit is not necessary for the GENESIS 32X(V Al ). This circuit is built into the MEGA DRIVE 32X from the first unit. 1. SPECIFICATIONS Ratings MEGA DRIVE 32X Model GENESIS32X PAL PALG/1 Power input Input: AC120 V, 60Hz Input: AC230 V, 50 Hz Input: AC240 V, 50 Hz Output: DC lO V, 850 rnA Output: DClO V, 850 rnA Output: DC9 V, 850 rnA Power consumption Approx. 4 W Approx. 4 W Approx. 4 W Operating environment Temperature: 5 "C -35 "C Humidity: 20%RH-80%RH (no condensation) Dimensions 115(W) X 210(L) X lOO(H) mm Specifications Master 32bit RISC SH2 23 MHz 20MIPS CPU Srave 32bit RISC SH2 23 MHz 20MIPS RAM 2Mbit (SDRAM) Memories VRAM 2Mb it Sound PWM Sound Source (Stereo) VDP SEGA custom LSI Display TV Display capability Color 32,768 colors VIDEO Video Output RF I Slots I Cartridge slots I RGB -2- 2. IDENTIFYING PARTS Front View 3. ACCESSORIES Connector Cable Spacer for GENESIS II /MEGA DRIVE II RF Unit Cartridge Slot (PAL version except for France) Rear View Conversion Cable AC Adaptor Mono Cable Scart (France only) -3- AN IN Jack AC Adaptor Jack AudioNideo Cable (Mono) Electromagnetic Shield Plates Extension Unit (Only GENESIS 32X VAO) 4. DISASSEMBL V 4s1. Top Case Removal (See Fig. 4-1) 1) Remove four screws® and the top case. Fig.4-1 4-2. Sub Board Removal (See Fig. 4-2) /Top case 1) Remove ten screws @ attached the top shield case. 2) Remove two screws© attached the 64-pin connector. 3) Remove two 40-pin flat cables on the sub board. 4) Remove the sub board showned as arrow. Fig.4-2 4-3. Main Board Removal (See Fig. 4-3, 4-4) -4- 1) Remove four screws @ attached the front case and rear case on the bottom case and then their showned as arrow. 2) Remove two screws ® attached the front case and rear case and main board. Rear Case Fig.4-3 ear case Flg.4-4 5. ADJUSTPvlENT Video Frequency Matching Adjustment Test equipment and tools for adjustment 1. Regulated power supply (SV DC) 2. Frequency counter (capable of displaying 7 digits or more) 3. 10:1 oscilloscope probe 4. Philips screwdriver 5. Non-metal adjustment driver 6. AC adaptor excusively for super 32X 7. One lead for GND and two leads for SV Connections of test equipment Regulated power supply lA'\/ 0 lA'\/ 0 GND V 0 AC adaptor excusively for super 32X To AC outlet Frequency counter j3.5795456MHzl To DC Jack Connect to 10:1 probe to IC12 pin 20 Connect to GND Pattern AdJustment procedure I. Disconnect the super 32X from the Mega Drive. Connect to IC12 pin 31 Sub Board 2. Remove the top case and top shield case from the super 32X. 3. Plug the AC adaptor into an AC outlet and into the DC jack. 4. Set the regulated power supply to 5V DC and connect it to ICI4 pin I. (The super 32X turns on.) 5. Connect 5V DC to IC12 pin 31. (Set to the test mode.) 32 31 17 ~ 1 16 6. Connect the frequency counter to IC12 pin 20 and adjust C72 so the frequency is 3.579545 MHz ± 10Hz. -5- MEMO -6- 6. BLOCK DIAGRAM A SIFT\IARE SELECT ABLE r----------------------------------------------------·---------------------------------------------------, : 32X BLOCK DIAGRAM I I I I I I I I I I I I I ROt1 CARTRI OGE L AOORESS S\1[ TCH 8 ET\o£EN GENES! S/110 At() 32X. I SII!TCH IS SET V lA I A REG! STER IN !C 4. [ I ffiOV !DES []1A CHANil:L GEti!MO TO/FROM 32X <8. l6bit WOROSI - ICII SOUND MIX I I I I I -rnt~ln I -8 I T MAP MODE I -SCREEN SHIFT CONTROL I -AUTO KILL 1 ::~ri mt gr~~T ADOOESS I ·FROil: BUFFER CONTROL I I I R G. B. VIN CVI!£0 I !Cl2 I : I VREF. !REF. vIDEO I CN? TO TV /- ----------------~ '-, SRl-"B--t-''0~,~~-'-T-f/-----------711~1129,-J VCLK ' uu r r L ' ~ -MVRES -----T,;;;CJ VRES 1 '-DVCLK 1 i,r-- -RESET I DD MRES I~GNOI L ___ .J FB2 f~~~~~~~JB!Ii=~~=t~~~L~I---==-t-t---~--------~L__ EOCLK -lt'RES B2 Tb -MMRES SRI 83 VAq SRI ~~VA~9~~6~4~~ ~-VcoA7.10;_~B"'5~~ ~-AS ~AS r--- -MCED IDI CEO FBJ 2400HM [r-- -MASEL ~ ASEL CAS2 CASD OTAK LIIR U\IR CART VAI8 86 ~ ~-VcoA7.19;_~8""1'-l~ ~~v"'A2""o;-~BB~~ ~-VcoA~21~~8~9'-l~ ~-cVcoA0<:22;-+.:8~10.-l~ ~~v7i~:---0 VRES I I C53 I i JIOOP I L.:. ____ _j lVAI lRYI ~ CS2 T 68P r!r ~ USE 8 -MCAS2 ---~~ --9-- I ~3~ I I ~USE I I I I I Lv~c __ _j IVAI ONL Y1 c Ie4 A JIS-5818 _.-------------------------------------SHAI-21@ ROO :~: ~;~: ROI 16i CT02 R0 2 162 CTOJ ROl 163 CT04 :~ 164 CTDS R06 :~ ~;~ :~ 161 CTOB R0 9 168 CT09 RO I0 t--i'il6;;,9 __,c;;;T;;;D 1,_0 _, RO II t-T-li~O__,C;;;T;;;OIC\:1_, RO 12 t-T-ll;;;l--;,-CT~O,;;l2;--'l RD 13 tT-'7,.2_.,._cT~Oc;-l 1:--'l RO 14 t-T-'7;;J_.,._cr~ocii"o--' I RO 15 rl7_:o4__cCe.:T"'O 1"'5_, ['-_,;~;,;~;_! --'~~ 8 ,-J VA I ['-_,;V;,;A~J --'2~7~ VA 2 ~=~V~At4 ===2~6~ ~:; ['-,V;,;A'f-5 __ 25~ VAS VAb 24 VA 6 l'l'==~~~tl ===~~l~ VAl VA9 21 VAB 1'--'V:,:;A7,l 0,.----2;;;0;-J VA 9 l'--cV7iA.:Clli--';;l 9 rl VA I0 ('--,V:;;A-;;12;--+;18rl VA II I'-~V7iA'i'll;--;;17rl VA 12 ['-,V;,;A,;ci4;--;.;16,-J VAll 1'---'V:,:;A-"15'---'-'15;1 ~~: ~ I'--'V'-"A-"16;_---'-;14rl VA 16 ('--,V'-"A.!-:11~-"llrl VA I 7 I'--'V'-"A_,I8'---'-:II,-J VA IB OVAI9 ~ 4 ======:=======+t===~ltiO OVAI9 OVA20 f-~ 9 OVA20 OVA21 VA 22 ~ OVA21 SEL 151 OGEO p;;; 15 ,;- 4 ---- 0ASEl p;;; 15 ;;- 5 ---- 0CAS2 p;; 15 ,.:; 6 .---- 0CASO p;; 15 ;;; 7 --,--- 0L\o£ 158 Olio£ p@- 2 ~~~ t-i-3----- CKIO ~JJ'----- CHPLL ~ KILL r-L- 8UNRI ~ ' -:CEO~ -~ASEL ~ -;CIS2~ -GCISO ~ -.;Lioll~ P';HO ~ PI:HI ~ CKIO AVCC 1\:C AVDO 129 9 ~ao. J ~CI ~C6 IJD To. 1 ' :y::' 7' AGNO ('--,V::;A"'23~--'6,-J VA 22 '-="-----''-1 VA2l ('----;S;;:HA;;_l _ _:4;.;-0-I SI1A I l'----iSHA~2.--'4"'1-I SHA 2 I'--~SHA.;;"-l-,:::42;-1 SHAJ I'----;S;;:HA;;::4 _ _:4c;l-l SHA 4 l'----iSii'HAi'iS--=4~4-1 SHA 5 f'---"S;,;:HA,;6,-_:4;75; SHAb f'---"S;,;:HAc;;7 _ _:4c;6; SHA 7 ~===~~g:~~~=~~~~~ :~ f'---"S;,;:HA~t'C-0 --;4"'9; SHA I O f'---"S;,;:HA~I;_I -;5~0; SHA II 1'----;S!,'!HA;c-1~2 _,5~1-1 SHA 12 1'----;S!,'!HAc-;.1"-l _,5~2-1 SHAll ('----;S!,'!HA;c-1;,-4 _,5~4-1 SHA 14 1'----;S!,'!HA;.>-Ic;-5 _,5;;<5-1 SHA IS I'---';S!,'!HA~I~6 _,5~6-1 SHA 16 1'----';S!,'!HA;-'-1~1 --'5~1-1 SI1A t I 1'----';S!,'!HA~I;-8 --'3;;9-1 5HA 18 I'---';S!,'!HA;;_lc:,.9 __,30:8-1 SHA 19 I'---';S!,'!HA"'2'CO ----'l~l-1 SHA 20 '--"'SHA2=1_::ol0'-l SHA21 '--------"'58=-j SEL res 315-5805 Ie9 A RA I 1-4;--,;,CT;;A.;,l ~I RA2 ~-.;;- 3 _ ___,~ic.:'i-~~1 RAJ t 2 ~1 ==~C~TA~4=~: RA 4 .-80 CTAS RAS ~19;-___,CTF.A7-6 ~I RAb 18 CTAI ::~ 1 16 1 CTAB RA9 75 ~::~0 RAIO RA II hi 4;----;;;CTio-A;-;ill;-' I RA 12 J-;;73(--iiiCT:';A;';l2;-/j RA I J 17,7 0(------iiiC Tc;A ;,:;13;.-/1 RA 14 J-.'Cb9;-~CTC:.Ac;l4'-'1 RAIS 1-7:~;-_.;;~"'i:c:-:~:'--'1 RA 16 1-"'66'--~CTC:.A:.:;ll'---1 :::~ I-"'6 0 5 4 '-~CT;:;cA;,:l8,_,-l RA 19 1-'." 61 ;-~~::7: 2 ., 1 :;-'I RA 20 J-;:;b2;-~CT:=.'A2;;;1'-"I :~~ J-.'C61;---,-,CTF.A2: !.,CE2 J:c42 ,'47• ro. I• CKIO 32 St£LK L FTOB I BR£0 1--"'lSc__ ______ ___ +- -8REQS llBACK f-0' 36 '-------------+- -8ACKM Q) OBACK J--=" 37 -----------+- BACKS GNOS oot-#- oo~ GNO~ Gt()~ GNIJ t2!- ICC lcto lc9 1GB To '•TO ,, r 7• F85 7 4ACO' FB6 0 '- CK!O SHCLK ~ 0 12DOHM vee cs 4IP T NO USE rJr E F -- 10- ® POlO -RESET POi I -lt'RES -MVSOC -~sm: jr-- -CCASO jr-- -CCEO -AS FTOO SLI SRI AI A2 Al A4 CNl PCHO -RESET CTA8 l__ AS A6 AI A8 A9 AIO All Al2 All 114 AIS Alb All AlB A19 A20 PCHI vee vee CUB CUll CUI CTAI2 CU6 CUll CUS CUI4 CTA4 CUtS CTAJ CTAI6 CTA2 CTAII CTAI CTAII CTAI CTA12 CTA6 CTA!l CTA5 CTAI4 CTA4 CTAIS CTA3 CTAI6 CTA2 CTAI7 CTAI CTA9 CTAIO CTAIB CIA19 CTA20 CTA21 CTA22 CTA2l CNl 81 FTOO 82 SLI 83 tSV 84 SRI 85 -lt'RES 86 CTA9 87 CTAIO 88 CIAI8 89 CTA19 BID CTA20 Bll CTA21 Bl2 CTA22 813 CTA23 814 -YSO 815 -MVSYNC 816 -~SYNC 817 -CCASO BIB -CCEO To SUB CN4 To SUB eN.: [F B19 GNO I ~- - ~ 2 ~- ~NI~AlOiL) ,------------1 V;--11AS~ v+-HVCLK~ Jl L ___________ _ CTOI CTOO GlOB CTD6 CTOI CT09 CTOS CTD2 CTOIO Cl04 CTOl CTOll iVAO Gii_Tj CN2 AI CTOI A2 ClOD AJ ClllB A4 CT06 AS CT01 A6 CT09 A? CTOS AB CT02 A9 CT010 AID CT04 All CTDJ Al2 CTDll All -AS To SUB eNS Al4 vee 1'3\ r -:= ------i---i~=w.~ltit=1f~~~=~ \.::V Al9 GNO 100 .l. A2D lOB BFP- '" eN2 r-------- ~~~~~ lVAO MYI ~ -CCAS2 r IVA I ONLY! I I IVAO ONLY! 1 ~ 6 ~ vee I I I I -CASEL -=-rMiEs · ' v--= -::-CL\;11 J ~ -I'!Ml ~-Ml ~-Tit£ L r-= -=-tt:1so·l r ~Ao iRli J v-- -rORT NTSC G ,J -------------l _ _ _ _ _ _ Bl -ttJTAK J r-------~--, lVAI tRY~- 81 GNO GTOIS ~; ~~~~~ 2 GTOI4 84 CT014 GIDll 85 CTOIJ CIOI 2 B6 CID12 r _:jlVAI MYI B7 -CASEL l1l B8 -MYRES Tl' 115 116 B9 -CL\oll BID MlfooR Bll -MJ 812 -Tit£ 813 1 117 1 ~ ::~ GNO -MCART _':::_ --='_ Bl6 •SV l__ 817 •SV BIB HISC Bl9 BFP ~'-'8"'-2D"-L_,G,NO'----+-' H VAOo-tl:ASO l VAl·--~ J To SUB eNS A B - 11- Al c CN2 = ..... c j 2 3 4 5 6 0 2 3 4 5 6 A B c D -12- 7-3. Schematic Diagram-2 (Main Section- 2/2) ~--------------------------------------------------~--------------------------------------------------------~---------------------------------------SHAl-21 ~ ICI II SH2 ~ASTER StfJO 130 OO Stfll Ill Ol Stfl2 133 02 StfJJ 135 Ol Sttl4 136 04 StfJS 137 D5 StfJ6 138 ll6 Stfl7 140 07 StiJB 142 D8 Stfl'l 143 09 Stfl!O 144 OIO Stflll I Oil Stfll2 2 012 Sttlll 3 013 Stfll4 5 014 StfJIS 7 O!S vee (:> CK!O 1--'-;11~8-+-+- SinK CKPACK -+h\- CKPREQ ___l_!L riJO~ rill ~ rll2 rffi-- M03r-rt9 M04~ 11()5 f--"'-'--- /lRLO ~' /lRL I D;-;:~"" 7 -+-- ;:~; p.:-:12"-6 -+-- -Stf11RLI ~ -SH'11RL2 ~ -SH'11RL3 ~ -SiflES ~ /RESET p;.;l2~2-+- !lf11 p;.;l25c=---H:T-----, /IVECF~ Tl ~ SCK !03 TXO 102 RXO 101 FTC! ~F,i FTI ~ L R2 !OK SCI< TXIl1 TXDS ~ 016 -To- 017 ll 018 ----tt 019 Is 020 It 021 17 022 19 02l 21 024 22 025 23 026 2s 027 27 028 ---te-029 ~OlD --=.:__ OJ! SHAI --* AD FTOA ~ StnK J FTOB FTOO IIIOTOVF ~ CD !IIGR 93 -8ACKM SHA2 32 AI SHAJ 34 A 2 SHA4 35 Al SHAS 36 A 4 SHA6 37 AS SHA7 38 A 6 SHAB 39 A 7 SHA9 41 AB SHAIO 43 19 SHAll 44 AID SHA\2 45 All SHAll 46 112 SHA\4 47 All SHA15 49 Al 4 SHA!6 51 m SHAI7 52 Al 6 SHAIB 53 Al 7 SHA19 55 liS SHA20 57 Al 9 SHA21 58 :~: +. A22 ~ A23 --#- A24 ~ A25 £ A26 _,--- -SIOlEQO -7'!- /OOEQO lr--- -SIOlEOI ---t;6 /00£01 --fg- /OACKO --=-- !DICK I /BRLS 92 -BREQS /BEN~ /\/All p~;;,: 9 ,------- -SHoll IT ': 87 :~E /\o£0 b~"' 3 '----- -SrllOtU 1\o£ I - SI{JQtt_ U !lo£2:&-- !lo£3j!!_ /RAS p 7 ;,; 9 ,------- -SHlAS /CAS BO -Sfr:AS RO/IIR 77 StflOIIR /BS 76 -st£5 !CSO p 7 ~ 2 '----- -Sfr:SOM ~ ~;; ;: :~;; -+ ~ /CS3 ?5 -Sfr:S3 _:;; =:::::: ic96 I EXTAL --1#- R3 IIOOPT I X l AL -ill- 3K L I!_ rjr .J CAP I 1- 7;1 O;;c8----'Wir--. 10 9 I AVCC fVAI CN_Y! CAP2 ~ Cl!,= 9 470P VCCPLL 1--'-' 10 "- 4 ---.---1--4 :!:?13 :!:T•Ct2 J 0 I• 4 7• rlr VSSPLL 106 vee 4 L vee --w- vee --w--- vee ~ vee 4i)- ~~ -tr- vee 54 vee~ vee it- vee!%- vee e-m- vee f--ill- vee f-ill- vee~ vee ~-'-'-- II IC 1e2 1-;P'"AR"'T"'S-:cNo:--.-r';DE;;iSCR~I"'P""li"'ONo:-1 C 96 · C9? 31S-0922 ICI:{)64!709Sf23 47PF 315-0922A ICI:{)641709Sf28 IOOPF 315-0998 ((Hl641709SF28 IOOPF vee lm lct81Ct9 1C27 lc~ lc36 I" 1. IQ l•IO I· I"~. I()_ I•IO 1• A 8 IC2 II SH2 SLAVE StfJO 130 OO ~: :i~ 01 Stfl3 135 ° 2 Stfl4 136 ° 3 StfJS 137 ° 4 Stflb 138 D5 SHill 140 ° 6 StfJB 142 ~ Stfl'l 143 09 Stfl!O 144 010 Stfl!l I Oil ~::~ ; 012 ~::~ ~ ~:~ '-='-"--;;-I 015 vee CKIO 1--'.; 11 "- 8 -+-- SHCLK ----~ CKPAeK -+h\- CKPREQ rJ-!L MOO~ :~ d.H=Q MOl~ M04 '-Wo-- M05 ~ !lRLO ~ !IRLl p;.;;l2~8-+- /IRL2 p;-;; 12 .;- 7 -+-- /IRLJ p.:-:12"-6 -+-- -SHSIRLI-- -SHSIRL2 --, -SHSIRLl--, SHAI SHA2 SHAl SHI4 SHA5 SHA6 SHA7 SHAB SHA9 SHAIO 21 22 AO 13 :~ 14 Al 17 A4 ;~ AS ;o 16 10 :; '9 A9 IC3 •P04502161 voo voo voo voo voo voo voo voo voo voo voo voo IC6 315-5781 ---+ 016 10 ~:~ 122 IR;~; p;-;;127-5 -+-&----, /IVECF ~ 12 -SHRES ---, R4 IOK r- - -SHCSJ ---%: v---- - -SHRAS ---jic v---- f- -SHCAS -fsC v---- f- SHROIIR -if: v---- f- -SHDOMLL --ji-- L-+v------IH-f-- -;:::LU jt v---- f- - SHCKE __l!_ cs RAS CAS 1.£ LOOM LOOM CLK CKE VCeQ r- 7 --U- 019 4 020 4 021 ~ 022 ____12_ 023 4 024 --4-o25 __R_ 026 --* 027 ::1tl 028 28 ' 029 29 030 ~ Oll SHAI --* AO SHA2 32 AI SHAJ 34 12 SHA4 35 Al SHA5 36 14 SHA6 37 AS SHA7 l8 ·.A 6 SHAB 39 A 7 ~~:io ~~ :t SHAll 44 All SHA12 45 112 SHAll 46 All SHAI4 47 114 SHAI5 49 AIS SHA16 51 116 ~::~ ~; All SHA19 55 Al 8 SHA20 57 Al 9 SHI21 58 :~: ---fl- A22 ---#- 123 4 A24 --* A25 -=- A26 f- -SHOREQO ~ IOREOO f- -SHOREQI ---it I!JREQI ~ /OACKO -=- lDACKI SeK 103 TXO 102 RXO 101 FTC! ~Fl FTI~ FTOA~ FTOB ~ IIIOIOVF ~ NO USE vee SCK ~ TXOS ~ TXOM ~ IBGR b 9 ;o; 3 --- -BREQS J fl\ /8RLS 92 -BACKS \V /BEN~ -Sf!WAIT ---._ (IIAI I 88 /CKE f%f-- /RO 1:>"'---- -SHRO MO ~ 8 ~ 5 --- -SMOOMLL ---._ AIEl Bl -SHOilt1LU ---._ M'2~ M'3~ /RAS 79 -SHRAS /CAS ~~ -SHCAS RMIR SHRI:Ml IBS ~--- -SHBS ICSO ~;~;----- -SHCSOS ~ ICSl 74 -SHCSI -+f---h_ /CS2 -SHCS2 -+f--'h /CS3 75 -SHCSJ _ -=:J-~ IVAI ONLYtfC97 I EXTAL --1#- R5 IIOOPT I XTAL -ill- lK l ~ rjr .J CAP! 108 '\r---j CAP2 ~ Cl4 _LA 9 vec 470P veCPLL 1--'-' 10 ::: 4 ---.-----1--4 J:T1ct6 J:Tcts VSSPLL 106 vee 4 .'> vee f-[f- vce --w--- vcc~ vee rw--- vec fa- vee r-st-- vce r-t)- vce T?-- vcc ~ vee~ vee~ vee~ vee r-m.- vcc~ vee~ 0 I• 4 7• rlr IC9 B IC9 F 74Actl4 R6 74AC04 -SI:tiD 3 >-4'--~ylBV0~~-'-'13'-l 12 j_C26 -SHROO ---+-----' c - 13- T IOOPI\'All m 120P 1\'AOI D 1'---i;SH:;:,A;:,I -~lSC-1 SHA 1 l'--i;SHA~2 -~l6rl :<1A 2 r---;;SHA;.::,:;-3 -~l7c-l 'iHAl f'---i'SH:7;Ai-4 -~lBc-1 1114 f'---i'SH:7;A7-5 -7il9-l :iHAS f'---i'SHA~6 -~40-1 SHAb r---;;:~~ -::;:;c-1 ~~:~ ['--;'SHAO'i-i;9 ;--7;4lc-J :HI9 t=t~~:~: :~=~:~w !'HAl 0 ,- SHAI2 49 cHill ['--';SHC'iA';'I3;--7,SO~ oHA 12 ['--';SHC'iA~I4;--f51H ! Hill l'---i;SH:7;A7.1S~-iC52rl !HA 14 l'---i'SH:7;A'i;l6'--"slrl ~Iii IS '----.:::SH"'A'-'17 __ =.;54-1 ;~::; 1'----7.:;;;--: --;;~~rl 5>(]0 I'----7.Stfl;,2,__~24'-l ~~ I'----7.SH0;;;--3 __ ;.;2Ic-J s,m ['---f.SH0,;;4e--~20Cl Stl4 ['----f.Stfl5~-.;.,:19c-J S{IS ['----f.SH0,;;6;;-~18c-J S ll6 ['----f.SH0~7 --.;,;17-J Sil 7 I'-----7.Stfl8~--.;-;16'-i S!ll8 1'-----7,SH09;;;-;;,--7C 15 '1 Slfl9 1'-----7-SHO~I o'--.;-;I'rl Sill I o I'-----7.Stfl~ll,--;.;llc-l Sill! I I'-----7.Stfl~l2;--.;.;12'-l Sllll2 I'----7.Stfl~l3c_.;-;llc-J Slllll I'---7.Stfl~l4'----"'l0Cl Sllll4 '----'SHO=l=-5 _9'-1 StillS :r-- -Sfr:SOM ----% C~OM v--- -Sfr:SOS ~ eSOS v--- -Sfr:Sl ~ e! I v---- -Sfr:S2 -Toe C::2 v-- Slfl!Ml ~ 1[:',\l i-- -SIWO ~ ![: v- -SillS ------{} ~· ir- - Sl:t»U --fa<: OCILL ir- -SI:t»LU -fi!: OO'LU ir- -SI:m:QO ~ !KOO lr--- -Stm:Ql---* IJlEQl ir- -StNAIT -f.<: WA!T ir- -SiflES ~ SirlES ir- -SHSIRLI ----4: Sl!lll ir- -SHSIRL2 ~ SI!IL2 ir- -SHSIRLJ -i#: Sl:U ir- -Stf11RLI ~ HliINI R20 !OK 15 LPFI lFBl LPO! al02 ci·--- ·x 5102 f-0---- ClJOl r!I----- STOI ~--- AVCC vee ~--i~a; eEl r REF IN GN1l ~·i 10. ~-L---------~ REFO 120 R2l 4. 7K CE20*" 100. ,Jr -RESET •5v IVCC 0 i-o 16] CE19+~ 100.. 100, 165 1 vee L:;. f-o 162 L7 ± r{i ,J,. tOS CONI C84 CEil 0 [, 4IU. 11Cl406JAM TRS FX40l R52 220 R51 560 :i;:OIFFERE~E TABLE FOR OIAGRAM-l :!;: Cl:iCUIT NTSC PAL L4 l:>.H lO.H LS 8:>.H XI 3. S79545ttiz 4 4336l875ttiz R40 560 430 R4l I 2K 680 R42 IK ~T USED R43 NOT USED IK C70 47P 6BP C74 !8P ISP 10 C75 56P 47P II C78 lOOP 82P oc rL [ IC13 I S G ·eNs IC14 PST993 2 £ E R53 r--- IOK rfr +-----~5'-1 COlt' r.- RS4 IPK vee 7 O! HECl120-0IOOIO ~ RSO T6;SR-35\-too~ enl?'Jcol ~~ I DC IN 6 :;- ~ 13 ? r ~~ I 3 + 1 JJKrfr ,_--l TC T 0.1 TO,, () 2 CE!6 I CBJ C62',~ :::!::C 8l 157~ Gl«J ~ 220. rfr 0. ,, ___l_ __l_ - 161 R56 4 7K T ~~pl2:UR55 rfr IOK TR3 2Sei62J _,--. ~R57 J,_IK TR4 2SCI623 !59 1 CN6 Q T23 FBIO Q fl5 CN4 [:J:s~Rii](}ji!Jr==lc::I9Jif-------~•~;:---------------------------------------------------------~ 0 • I 9 I s. Rl(}jl 1'1 Q 124 FBI I ? Tl6 I [I :J:s]LE~FIT:=JI~a]l-~•~;----- -------------------------------------------------~ 0 • I a j s.LEFT 1 Q 125 JFB[t2:_ _____ Qt~Il:-7-{IJ=~O [l:lA~vO~Io~Ji~c]i--~•------------------------------------------------------- 1 -C- 1 - 2 --------------------------------------~-----------~ 0 ~ 146 I 6 I 10010 I Q T26 R26 C64 [ :JR[IN~l==JI=r7JI--~·~r-----------------------------~ 1 5~vv~---o~.~I'J~ Qm m ~·· [ :JGITIN~I==]I:J:l]l--~·~.---------- ---------~~~~~AA~----~---' 0 ~·~ 1 'J~ Q 128 R28 C66 II RINI GIN I llS-5768 rlr FBIJ Q 138 ~~ ~ 29 ~-------------------------------------------~' 0 ~------~·~~l[l7JI==JR~oo[r==l FBl4 0 T39 GWT 26 """"' 0 I 3 GOUT C94 l!OOP l[~B~INITt==IIJ[i}l--~·~~~;-----------------1 75 ~vv-r---i~--t----' 0 ~·~~>j~ 9 129 9 flO 1~31 RJO R29 rlr rlr 75 ~ 75 BINI • VV FBIS ~ [40 21 .io~------~~~:IJ::!~:J BO.JT 1-"'-----------------------~~ I I I BOOT. I FB16 ? 141 vrur t-= 20 ~-----------~~--------------+~Ht-~~~~ 0 ~------~•~;-~I='[II==~voo~r[:JI c A/V IN JACK To GENESIS or MEGA DRIVE rJ rfr R32 C67 !OR 33 O.I'Jj~~~ -----------------R-l-3--~~~T--~c68~ 11 :(Xi 33 0. I' J L..1_ R34 C69 II - .Ul TR 2 ll 1~37 R36 Rl5 O. I' j f-----1- 160 160 160 ~ 2SCI62J rfr rfr "149 F" I 10 VA r:Y y 150 II +--'NI,---.,>---ol+'--.---l 0 h~----+----'-'-1 VB ~9 n ~4~ J-~~~,i~ l Xl L ? !51 12 VC 1}--J :1:3 R41 :b C73 CIO ell 15 TB2P CEll :1:8 T lOP m Rl~ Gl~ BIN2 om '' rfr ' [ ==~v1EN==):~4}--~l~--------t--t~~~fL---~----------------------~ 4 YIN () 132 l [:Ic}SY~~~):s~--~~ll--------t--t-~~::------~----------~~~--~ 2 ~ 3 CSY~ I vee I 2 I ~ TJJ ' I ~ ,~l!\« .-_- __ r_so ______ _.9_rs_2+---'-IJ rs l ~TJ4 ~~ rlr --- lr-BF_P ____ v_cc ___ +-:c?;:::-:t----'-12 BFP t--+-----" 32 '-! NTSC/PAL vee NFI ¢; ~ ]_____ I R42 ~ "c ~ 1 , :1:6 TS5o-l!- TEST eEIO L__ __ _ Q f------ 4 7, NTSC .------- ~ n R4l :1:7 C.SY~ 24 rl~:l: 9 • CEI2 R44 FBI I '( f42 SY~O I-"'22'--------'VRdl/'5v-10-I"" ~~SE 220. 75 ~ 0 0 r 43 5 1001 _1_ 2 vee l5 1 .:· 1 145 ~) YIN t-2'---c-76---R,-7--R~:-:---+----!c~f} 1 A/V OUT c:~ ~:: _____ o;'t~i', "" .~ ~ J:'lv 4ti ~ i_j 147 :1:11 ~~;s• T48 C/9 o. 047" ll? POO 1-'-''-+~----[ f-----; r vee~ vee~ r vee CBO 0.11' ------------------------------------------------------- 0 E F G H ... J .. ,.. 10 '-:>. '-#lrcun ~oard Diagram-2 (Sub Board) 2 I :S 3 I :S 3 je I II I H:S .___,lot:~l--.J. 3 4 5 6 A B c 0 E F ~----l..----~G -~ ~--""-~---~H ___ _j - 17- 18- 8. PARTS SPECIFICATIONS IC1/2 CPU IC H06417095F23QFP Parts No. : 315-0922 •Top View 108 109 114 • Description No. 1/0 1 2 I/0 3 4 - 5 1/0 6 - 7 8 9 1/0 10 II 12 - 13 1/0 14 - 15 16 1/0 I7 18 - 19 1/0 20 - 21 22 l/0 23 24 - 25 1/0 26 27 28 1/0 29 30 31 1/0 32 33 34 35 36 1/0 37 38 39 40 - 73 HD6417095 36 Pin Name Dll D12 013 VCCI Dl4 VSSI DIS 016 017 018 019 VCC2 D20 VSS2 D21 D22 D23 VCC3 D24 VSS3 025 D26 D27 VCC4 D28 VSS4 029 D30 031 AO AI A2 vsss A3 A4 AS A6 A7 A8 vccs IC H06417095F28 QFP Parts No. : 315-0922A 72 37 Data bus Power supply (SV) Data bus Power supply (OV) Data bus Power supply (SV) Data bus Power supply (OV) Data bus Power supply (5V) Data bus Power supply (OV) Data bus Power supply (5V) Data bus Power supply (OV) Data bus Address bus Power supply (OV) Address bus Power supply (5V) - 19- Function - ·- - - - ~ - No. 41 -· 42 43 44 45 46 47 48 49 I-· 50 51 52 53 54 55 56 57 58 59 60 1-· 61 62 63 64 r- 65 1--· 66 67 68 69 70 1--· 71 I- 72 73 74 75 I-· 76 77 f- 78 t--· 79 80 8I 82 1--- 83 84 85 I--· 86 87 I-- 88 I--· 89 I--· 90 91 r--92 93 94 95 t--· 1---96 97 98 - 99 iOO -·lOI 102 --103 ~=- -- 1/0 Pin Name Function I/0 A9 Address bw; - VSS6 Power supply (SV) AIO All 1/0 A12 Address bu! A13 AI4 - VCC6 Power supply (SV) 1!0 AIS Address bus - VSS7 Power supp;y (OV) AI6 1!0 AI7 Address bus AI8 - VCC7 Power supply (SV) 1!0 Al9 Address bus - VSS8 Power supply (OV) A20 1/0 A21 Address bus A22 - VCC8 Power supply (SV) I/0 A23 Address bus - VSS9 Power supply (OV) A24 1/0 A25 Address bus A26 0 DACKO DMACO acknowledge - VCC9 Power supply (SV) 0 DACKI DMACI acknowledge - VSS10 Power supply (OV) I DREQO DMACO rec,uest I DREQ1 DMAC1 request 0 cso Chip select 0 0 CSI Chip select 1 0 CS2 Chip select 2 0 CS3 Chip select 3 1!0 BS Bus cycle start 1/0 RD/WR Read write - VSSll · Power supply (OV) 0 RAS CE RAS for DRAM/SDRAM/CE for PSRAM 0 CAS OE CAS for SDRAM/OE for PSRAM 0 CASHH . DOMUU WE3 Each memo!)' most significant byte select signal 0 CASHL DOMUL WE2 Each memo!)' 2nd byte select signal 0 CASLH DWMLU WEI Each memo!)' 3rd byte select signal - VCCIO Power supply (SV) 0 CASLL _OO_MLL WEO Each memo!)' least significant byte select signal - VSSI2 Power supply (OV) 0 RD Read pulse 0 CKE SDRAM clock enable control I WAIT Hardware wait request. 0 BEN Reserve - VSSI3 Power supply (OV) I BACK BRLS Bus right pennission in slave mode./Bus right ack_now!edge in master mode. 0 BREQ,BGR Bus right request in slave mode./Bus right acknowledge in master mode. 0 WDTOVF Watch dog timer qutput. 0 FTOB Free-running timer output B. - VCCI1 Power supply (SV) 0 FTOA Free-running timer output A. - VSSI4 Power supply (OV) I FTI Free-running timer input. I FTCI Free-running timer clock input. I RXD Serial data input. 0 TXD Serial data output. 1/0 SCK Se~~l clock!r!£Ut/OU!}?Ut. ... - - No. 1/0 Pin Name Function 104 - vee (PLL) 12 Power supply (5V) of built-in PLL 105 I MDO Operation mode pin 106 - VSS (PLL) 15 Power supply (OV) of built-in PLL 107 I MDI Operation mode pin 108 0 CAPl External capacitor connection pin for PLL 109 CAP2 110 I MD2 Operation mode pin Ill 0 CKPACKN Clock pause acknowledge output. 112 I CKPREON Clock pause request input. 113 - VCC13 Power supply (5V) 114 I N.C Not connectes. 115 - VSS16 Power supply (OV) 116 0 N.C Not connectes. 117 I MD3 Operation mode pin 118 I/0 CKIO System clock input/output. 119 I MD4 Operation mode pin 120 MD5 121 - VSS17 Power supply (OV) 122 I RES Reset 123 - VCC14 Power supply (5V) 124 0 IVECF Interrupt vector fetch cycle 125 I NMI Non-maskable interrupt request. 126 IRL3 127 I IRL2 External interrupt factor input. 128 IRLl 129 IRLO 130 1/0 DO Data bus 131 Dl 132 - VCC15 Power supply (5V) 133 1/0 D2 Data bus 134 - VSS18 Power supply (OV) 135 D3 136 1!0 D4 Data bus 137 D5 138 D6 139 - VCC16 Power supply (SV) 140 1!0 D7 Data bus 141 - VSS19 Power supply (OV) 142 DB 143 1/0 D9 Data bus 144 010 -21- • Block Diagram MULT CACHE DATA DIVU CPU EXCEPTION PROCESS INTERRUPT I--- CONTROLLER 1-- ...J <( z (!) Ci5 (/') ~ li: ::> ~ ::>~1----t-'CD:::'--t-+"~' -!----! 16-bit FREE- RUNNING TIMER a: Cl) ::> LJL__L-+~~~r----~~~~ffi m ~ ~ ~ ~ VECTOR ADDRESS c c ~ :5 .__ L::j '------- SERIAL ~

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