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pinout (распиновка)

Apple SCSI HDI-30 connector

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30 pin connector
Pin Name Dir Description
1 n/c   Reserved for SCSI disk mode.
2 /DB0 <-> Bit 0 of SCSI data bus
3 GND --- Ground
4 /DB1 <-> Bit 1 of SCSI data bus
5 TPWR <-> Termination power
6 /DB2 <-> Bit 2 of SCSI data bus
7 /DB3 <-> Bit 3 of SCSI data bus
8 GND --- Ground
9 /ACKS <-- Handshake signal. When low acknowledges a request for data transfer
10 GND --- Ground
11 /DB4 <-> Bit 4 of SCSI data bus
12 GND --- Ground
13 GND --- Ground
14 /DB5 <-> Bit 5 of SCSI data bus
15 GND --- Ground
16 /DB6 <-> Bit 6 of SCSI data bus
17 GND --- Ground
18 /DB7 <-> Bit 7 of SCSI data bus
19 /DBP <-> SCSI data bus parity bit
20 GND --- Ground
21 /REQ --> Request for a data transfer
22 GND --- Ground
23 /BSY <-> When active (low) indicates that the SCSI data bus is busy
24 GND --- Ground
25 /ATN <-- When active (low) indicates an attention condition
26 /C/D --> When active (low) indicates that data is on the SCSI bus. When high, indicates that control signals are on the bus
27 /RST <-> SCSI bus reset
28 /MSG --> Indicates the message phase
29 /SEL <-> SCSI select
30 /I/O --> Controls the direction of data output. When high, data is input

Note: Direction is Device relative Bus (other Devices)

Источник: Apple Tech Info Library 12929: Duo Dock/Duo Dock II, External Pinouts at Apple TIL homepage

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