Seagate ST31200N, Руководство по эксплуатации продукта

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Driver Receiver
2.0K Ohm
GND
Main PCB
J1 - 37 [1]
J6 - 6
J6 - 5
+5V
*
36 Product Manual - Hawk 1LP Family SCSI-2 (Volume 1), Rev. A
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10.2.1.1 Drivers and receivers
Figure 10.2.1-1 shows a diagram of the driver/receiver circuit. The driver circuits have the following electrical
specifications.
Negated (False): 0.0 V to +0.4 V @ I = - 48 mA (max).
Asserted (True): +2.24 V to +5.25 V @ I = +250 uA.
Note.
[1] This connection available only on the ST31200NC and ST3620NC models. Use one or the other, but not both J1
and J6.
Figure 10.2.1-1. SCSI reference index signal driver/receiver combination
10.2.1.2 Termination
The reference index signal () is terminated with a 2 K ohm resistor. Each drive has a termination
resistor located on the Main PCB. The terminator resistor is not removable and is always in the circuit.
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*See paragraph 10.2.1.2