| IC number | Manufacturer | Documentation |
|---|---|---|
| 5720 | MOS Technology / CSG | Not available |
| IC number | Package | CBM part number | CBM part description |
|---|---|---|---|
| 5720 | 68-Pin PLCC | 318087-01 | MOS 5720, Mouse-I/O control |
| Device | Position | Package |
|---|---|---|
| PC-I | U14 | PLCC |
| PC40-III | U601 | PLCC |
| Pin | Type | Name |
|---|---|---|
| 1 | Power | VDD |
| 2 | Input | /BDACK0 |
| 3..6 | Input | BA3..BA0 |
| 7 | Input | SCLK |
| 8 | Input | /RESET |
| 9 | Input | RS0 |
| 10 | Input | /WAIT |
| 11 | Input | RS1 |
| 12 | Output | IOCHRDY |
| 13 | Input | RS2 |
| 14..17 | I/O | BD0..BD3 |
| 18..19 | Power | GND |
| 20..23 | I/O | BD4..BD7 |
| 24 | Input | /BDACK |
| 25 | Output | /IDIR |
| 26 | Output | /NOVID |
| 27 | Input | /BL |
| 28 | Input | /MONO |
| 29 | Input | /BM |
| 30 | Input | /BR |
| 31 | Input | HQ-I |
| 32 | Input | HP-I |
| 33 | Input | VQ-I |
| 34 | Input | VP-I |
| 35 | Power | VDD |
| 36 | Input | M16 |
| 37..39 | Output | IRQ2..IRQ4 |
| 40 | Output | IRQ6 |
| 41 | Input | IRQ6-IN |
| 42 | Output | DRQ2 |
| 43 | Input | DRQ2-IN |
| 44..45 | Output | DRV-SEL2..DRV-SEL1 |
| 46 | Ouput | FDC-RESET |
| 47 | Output | /CS-RTC |
| 48 | Output | /CS-HDC |
| 49 | Output | /CS-FDCXTR |
| 50 | Output | /CS-LDOR |
| 51 | Output | /CS-FDC |
| 52 | Power | GND |
| 53 | Input | TEST |
| 54 | Output | /CS-COM |
| 55 | Output | /CS-LPT |
| 56 | Output | /IOW-DLY |
| 57 | Output | /IOR-DLY |
| 58 | Input | /COM-OUT |
| 59 | Input | COM-INT |
| 60 | Input | /BIOWC |
| 61 | Input | BAEN |
| 62 | Input | /BIORC |
| 63..68 | Input | BA9..BA4 |
| Address | Description |
|---|---|
| 0x230 (read/write) | Mode register |
| 0x23E (write) | Mouse control register |
| 0x23E (read) | Mouse status register |
| 0x23C (read) | Horizontal/vertial counter register |
| 0x23D (read/write) | Dummy register |
Copyright © 2010 Ronald van Dijk - All rights reserved
Last update: 5 September 2010