Macintosh External Drive
From HwB
[edit] Pinout
19 PIN D-SUB FEMALE at the Computer.
19 PIN D-SUB MALE at the Diskdrive.
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | CGND |  | Chassis ground |
| 2 | CGND | | Chassis ground |
| 3 | CGND | | Chassis ground |
| 4 | CGND | | Chassis ground |
| 5 | -12V |  | -12 VDC |
| 6 | +5V | | +5 VDC |
| 7 | +12V | | +12 VDC |
| 8 | +12V | | +12 VDC |
| 9 | n/c | - | Not connected |
| 10 | PWM | ? | Regulates speed of the drive |
| 11 | CA0 | ? | Control line to send commands to the drive |
| 12 | CA1 | ? | Control line to send commands to the drive |
| 13 | CA2 | ? | Control line to send commands to the drive |
| 14 | LSTRB | ? | Control line to send commands to the drive |
| 15 | /WrReq | ? | Turns on the ability to write data to the drive |
| 16 | HdSel | ? | Control line to send commands to the drive |
| 17 | /Enbl2 | ? | Enables the Rd line (else Rd is tri-stated) |
| 18 | Rd |  | Data actually read from the drive |
| 19 | Wr | | Data actually written to the drive |
Note: Direction is Computer relative Diskdrive.
[edit] Contributions
[edit] Sources
- Apple Tech Info Library, Article ID: TECHINFO-0001424