Pinout
| Pin | Type | Name | Signal name |
|---|
| CDTV |
|---|
| 1 | Output | PN0 | G1 |
| 2 | Output | PN1 | G2 |
| 3 | Output | PN2 | G3 |
| 4 | Output | PN3 | G4 |
| 5 | Output | PO0 | G5 |
| 6 | Output | PO1 | G6 |
| 7 | Output | PO2 | G7 |
| 8 | Output | PO3 | G8 |
| 9 | Output | PP0 | connected to pin 2 of U80 |
| 10 | Input | PA0 | CPCP0 |
| 11 | Input | PA1 | CPCP1 |
| 12 | Input | PA2 | CPCP2 |
| 13 | Input | PA3 | CPCP3 |
| 14 | Input | PB0 | KI0 |
| 15 | Input | PB1 | KI1 |
| 16 | Input | PB2 | KI2 |
| 17 | Input | PB3 | +5VD via RP21 |
| 18 | I/O | PC0 | KST0 |
| 19 | I/O | PC1 | KST1 |
| 20 | I/O | PC2 | KST2 |
| 21 | I/O | PC3 | KST3 |
| 22 | I/O | PD0 | CD0 |
| 23 | I/O | PD1 | CD1 |
| 24 | I/O | PD2 | CD2 |
| 25 | I/O | PD3 | CD3 |
| 26 | I/O | PE0 | CA0 |
| 27 | I/O | PE1 | CA1 |
| 28 | I/O | PE2 | CA2 |
| 29 | I/O | PE3 | CA3 |
| 30 | ? | TEST | GND |
| 31 | Power | VSS | GND |
| 32 | ? | OSC1 | connected to X4 |
| 33 | ? | OSC2 |
| 34 | ? | RES_ | connected to pin 39 of U58 |
| 35 | I/O | PF0/SI | SDATA |
| 36 | I/O | PF1/SO | SDATA |
| 37 | I/O | PF2/_SCK | SCK |
| 38 | I/O | PF3/_INT | unused |
| 39 | I/O | PG0 | _VDATA |
| 40 | I/O | PG1 | _VCK |
| 41 | I/O | PG2 | _VST |
| 42 | I/O | PG3 | _KBRESET |
| 43 | I/O | PI0 | MS0 |
| 44 | I/O | PI1 | MS1 |
| 45 | I/O | PI2 | connected to pin 6 of U74 |
| 46 | I/O | PI3 | AUPLY |
| 47 | I/O | PJ0 | AUS2 |
| 48 | I/O | PJ1 | MPS |
| 49 | I/O | PJ2 | AUS0 |
| 50 | I/O | PJ3 | AUS1 |
| 51 | ? | VP | VPP |
| 52 | Output | PK0 | POWER |
| 53 | Output | PK1 | GMS1 |
| 54 | Output | PK2 | GMS0 |
| 55 | Output | PK3 | connected to pin 19 of U60 |
| 56 | Output | PL0 | Sa |
| 57 | Output | PL1 | Sb |
| 58 | Output | PL2 | Sc |
| 59 | Output | PL3 | Sd |
| 60 | Output | PM0 | Se |
| 61 | Output | PM1 | Sf |
| 62 | Output | PM2 | Sg |
| 63 | Output | PM3 | Sh |
| 64 | Power | VDD | +5VD |