
DBK215, pg. A-8 948894 Appendix A
Digital I/O Correlation to 68-pin SCSI TB5 Pin Number and Description
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
A7 49 Digital I/O: Port A, Bit 7
A6 15 Digital I/O: Port A, Bit 6
A5 50 Digital I/O: Port A, Bit 5
A4 16 Digital I/O: Port A, Bit 4
A3 51 Digital I/O: Port A, Bit 3
A2 17 Digital I/O: Port A, Bit 2
A1 52 Digital I/O: Port A, Bit 1
A0 18 Digital I/O: Port A, Bit 0
P2 – TB5
TB6 Pin Number and Description
+5 V 19 Expansion +5 V Power
+5 V 19 Expansion +5 V Power
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
P2 – TB6
TB7 Pin Number and Description
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
C7 41 Digital I/O: Port C, Bit 7
C6 7 Digital I/O: Port C, Bit 6
C5 42 Digital I/O: Port C, Bit 5
C4 8 Digital I/O: Port C, Bit 4
C3 43 Digital I/O: Port C, Bit 3
C2 9 Digital I/O: Port C, Bit 2
C1 44 Digital I/O: Port C, Bit 1
C0 10 Digital I/O: Port C, Bit 0
P2 – TB7
TB8 Pin Number and Description
DGND ** Digital Ground, Common
DGND ** Digital Ground, Common
B0 14 Digital I/O: Port B, Bit 0
B1 48 Digital I/O: Port B, Bit 1
B2 13 Digital I/O: Port B, Bit 2
B3 47 Digital I/O: Port B, Bit 3
B4 12 Digital I/O: Port B, Bit 4
B5 46 Digital I/O: Port B, Bit 5
B6 11 Digital I/O: Port B, Bit 6
B7 45 Digital I/O: Port B, Bit 7
P2 – TB8
* The following SCSI Pins connect to Analog Common: 24, 27, 29, 32, 55, 56, 59, 64, and 67.
** The following SCSI Pins connect to Digital Common: 35, 36, 40, and 53.