Datasheet

 
   
    
SCBS123F − AUGUST 1992 − REVISED APRIL 2004
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
26
L
3
DIR
L
1
CLKAB
X
28
CLKBA
X
2
SAB
X
27
SBA
L
REAL-TIME TRANSFER
BUS B TO BUS A
26
L
3
DIR
H
1
CLKAB
X
28
CLKBA
X
2
SAB
L
27
SBA
X
REAL-TIME TRANSFER
BUS A TO BUS B
26
X
3
DIR
X
1
CLKAB
28
CLKBA
X
2
SAB
X
27
SBA
X
STORAGE FROM
A, B, OR A AND B
26
L
3
DIR
L
1
CLKAB
X
28
CLKBA
H or L
2
SAB
X
27
SBA
H
TRANSFER STORED DATA
TO A AND/OR B
X
H
X
X
XX
X
X
X
L H H or L X H X
↑
↑
↑↑
BUS B
BUS A
BUS B
BUS A
BUS B
BUS A
BUS B
BUS A
OE
OE
OEOE
Pin numbers shown are for the DL, DW, and JT packages.
Figure 1. Bus-Management Functions