User guide
SC35 User Guide Ver 4.8  August 30, 2002  Page 6 of 25 
3.2.2  SCSi Connector Pinout 
The following shows the pin connections for the SCSI connector used on the 
SC35. 
PIN  SIGNAL  PIN  SIGNAL 
1  GROUND  2  DB0 
3  GROUND  4  DB1 
5  GROUND  6  DB2 
7  GROUND  8  DB3 
9  GROUND  10  DB4 
11  GROUND  12  DB5 
13  GROUND  14  DB6 
15  GROUND  16  DB7 
17  GROUND  18  DBP 
19  GROUND  20  GROUND 
21  GROUND  22  GROUND 
23  RSVD  24  RSVD 
25  GROUND  26  TERMPWR 
27  RSVD  28  RSVD 
29  GROUND  30  GROUND 
31  GROUND  32  ATN 
33  GROUND  34  GROUND 
35  GROUND  36  BSY 
37  GROUND  38  ACK 
39  GROUND  40  RST 
41  GROUND  42  MSG 
43  GROUND  44  SEL 
45  GROUND  46  C/D 
47  GROUND  48  REQ 
49  GROUND  50  I/O 
3.3  SCSI Commands 
3.3.1  Test Unit Ready Command – 00h 
Test Unit Ready CDB 
The TEST UNIT READY command provides a means to check if the logical unit 
is ready. This is not a request for a self-test. If the logical unit would accept an 










