Hitachi HUS157336EL3600 - Manual (Page 35)

Drawing No. Sheet No. Revision 5
K6602906 35/46 2003/6/12
Table 11.3 Pin assignment of SCSI Bus Connector C1
(SCA-2, Single-ended mode)
Signal Name Connector contact No. Signal Name
12V 1 41 GND(12V Return)
12V 2 42 GND(12V Return)
12V 3 43 GND(12V Return)
12V 4 44 MATED1 (Note 2)
Open 5 45 Open
Open 6 46 DIFFSENS
-DB(11) 7 47 GND
-DB(10) 8 48 GND
-DB(9) 9 49 GND
-DB(8) 10 50 GND
-I/O 11 51 GND
-REQ 12 52 GND
-C/D 13 53 GND
-SEL 14 54 GND
-MSG 15 55 GND
-RST 16 56 GND
-ACK 17 57 GND
-BSY 18 58 GND
-ATN 19 59 GND
-DB(P0) 20 60 GND
-DB(7) 21 61 GND
-DB(6) 22 62 GND
-DB(5) 23 63 GND
-DB(4) 24 64 GND
-DB(3) 25 65 GND
-DB(2) 26 66 GND
-DB(1) 27 67 GND
-DB(0) 28 68 GND
-DB(P1) 29 69 GND
-DB(15) 30 70 GND
-DB(14) 31 71 GND
-DB(13) 32 72 GND
-DB(12) 33 73 GND
5V 34 74 MATED2 (Note 2)
5V 35 75 GND(5V Return)
5V 36 76 GND(5V Return)
Reserved 37 77 LED(with 0 ohm)
AUTO START (Note 1) 38 78 -DELAY START (Note 1)
-ID0 (Note 1) 39 79 -ID1 (Note 1)
-ID2 (Note 1) 40 80 -ID3 (Note 1)
Note 1 When this signal is held to ground, it is regarded as LOW. When this signal is open,
it is regarded as HIGH. It can be driven by open collector driver.
Do not pull up this signal.
Note 2 The MATED2 signal is tied to ground, and the MATED1 signal is pulled up to HIGH
level in the drive. When the drive detects the MATED1 signal is held to LOW, the
drive regards the connection has completed. When the drive detects the MATED1
signal is held to HIGH, it regards the connection is incomplete.