Connector - Apple SCSI HDI-30

30 PIN UNKNOWN CONNECTOR
PinNameDirectionDescription
1n/c---Reserved for SCSI disk mode.
2/DB0---Bit 0 of SCSI data bus
3GND---Ground
4/DB1---Bit 1 of SCSI data bus
5TPWR---Termination power
6/DB2---Bit 2 of SCSI data bus
7/DB3---Bit 3 of SCSI data bus
8GND---Ground
9/ACKSInputHandshake signal. When low acknowledges a request for data transfer
10GND---Ground
11/DB4---Bit 4 of SCSI data bus
12GND---Ground
13GND---Ground
14/DB5---Bit 5 of SCSI data bus
15GND---Ground
16/DB6---Bit 6 of SCSI data bus
17GND---Ground
18/DB7---Bit 7 of SCSI data bus
19/DBP---SCSI data bus parity bit
20GND---Ground
21/REQOutputRequest for a data transfer
22GND---Ground
23/BSY---When active (low) indicates that the SCSI data bus is busy
24GND---Ground
25/ATNInputWhen active (low) indicates an attention condition
26/C/DOutputWhen 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/MSGOutputIndicates the message phase
29/SEL---SCSI select
30/I/OOutputControls the direction of data output. When high, data is input

Note: Direction is Device relative Bus (other Devices).

Source: HW-Book 2001-06-08
Last modified: 2007-06-27 14:22:59.0
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