User Manual

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14.4 SCSI Interface
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4.4.1 SCSI Interface Specifications
Input signals
Receiver CMOS receiver with hysteresis
Input signal levels Low level: 0 to 0.8 VDC High level 2.0to5.25VDC
Maximum load current ±10μA
(excluding terminator)
Minimum hysteresis 0.2 VDC
Output signals
Driver Open-drain CMOS driver
Output signal levels Low level: 0 to 0.8 VDC High level: 2.0 to 5.25 VDC
Driver sink current 48 mA
Terminator power signal
Output voltage 4 to 5.25 VDC
Maximum output current 1.2 A
Pin Signal Pin Signal Pin Signal Pin Signal Pin Signal
1 GND 11 GND 21 GND 31 -DB5 41 -ATN
2 GND 12 GND 22 GND 32 -DB6 42 GND
3 GND 13 GND 23 GND 33 -DB7 43 -BSY
4 GND 14 GND 24 GND 34 -DBP 44 -ACK
5 GND 15 GND 25 GND 35 GND 45 -RST
6 GND 16 GND 26 -DB0 36 GND 46 -MSG
7 GND 17 GND 27 -DB1 37 GND 47 -SEL
8 GND 18 GND 28 -DB2 38 TERMPWR 48 -C/D
9 GND 19 GND 29 -DB3 39 GND 49 -REQ
10 GND 20 GND 30 -DB4 40 GND 50 -I/O
26･･････
･･････50
1･･････
･･････25
NOTE
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4.4 SCSI Interface
The unit complies with the SCSI standard, and can therefore be used with a
wide selection of commercially 3.5-inch MO disk drives.
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General specifications
See Section 18.2.
■Electrical specifications
■
Connector
(1) Recommended connector:
Socket used：High density（pin type）（D-Sub halr-pitch 50 P）
(2) SCSI connector pin outs
・The SCSI cable is not supplied.
・Check the connection types on both the 8826 and the connected device. Use
commercially-available SCSI cables.