Black Box 2 x 2 SCSI Matrix Switch SC121A User Manual page 42

2 x 2 scsi matrix switch

Table of Contents

• DB0 through DB15, P, P1 (DATA BUS): Sixteen data-bit signals and two parity-

bit signals that together form a data bus. DB15 is the most significant bit and

has the highest priority during the Arbitration phase. Bit number, significance,

and priority decrease downward to DB0. A data bit is defined as a one when

the signal value is true and as a zero when the signal value is false. Data parity

DBP and DBP1 shall be odd.

Table 6-1. SCSI connector assignments for

Signal Name

Ground

single-ended (SE) 16-bit SCSI (wide).

Pin Number

CHAPTER 6: SCSI Technical Information

Signal Name

-DB12

-DB13

-DB14

-DB15

-DBP1

-DB0

-DB1

-DB2

-DB3

-DB4

-DB5

-DB6

-DB7

-DBP

Pin Number

Table of Contents

Sc120a-r2