protech PC-550, Руководство пользователя, Страница: 42 / 106

Chapter 2 Hardware Configuration
PC-550 USER
’
S MANUAL
Page: 2-31
ULTRA1 :
SCSI Connector for Ultra wide SCSI HDD.
The pin assignments are as follow:
ULTRA
PIN ASSIGNMENT PIN ASSIGNMENT PIN ASSIGNMENT
1 GND 24 GND 47 SCD7
2 GND 25 GND 48 SCDPL
3 GND 26 GND 49 GND
4 GND 27 GND 50 GND
5 GND 28 GND 51 TRMPWR
6 GND 29 GND 52 TRMPWR
7 GND 30 GND 53 NC
8 GND 31 GND 54 GND
9 GND 32 GND 55 SATTN-
10 GND 33 GND 56 GND
11 GND 34 GND 57 SBSY-
12 GND 35 SCD12 58 SACK-
13 GND 36 SCD13 59 SRST-
14 GND 37 SCD14 60 SMSG-
15 GND 38 SCD15 61 SSEL-
16 GND 39 SCDPH 62 SCD-
17 GND 40 SCD0 63 SREQ-
18 GND 41 SCD1 64 SIO-
19 NC 42 SCD2 65 SCD8
20 GND 43 SCD3 66 SCD9
21 GND 44 SCD4 67 SCD10
22 GND 45 SCD5 68 SCD11
23 GND 46 SCD6
#
The SCSI function of this CPU card is designed based on PCI Bus Master, that
means one of the PCI Bus Master is occupied. The SCSI Bus Master (DRQ3)
is same as 4
th
PCI Slot on the backplane (DRQ3).
When SCSI chipset is
on-board, the 4
th
PCI Slot on the backplane would fail even if SCSI
function is disabled
.