Reset and retransmit
Single device configuration/width expansion mode
|
|
|
|
Mode
|
|
|
|
|
RS
|
|
|
0
|
1
|
1
|
Inputs
|
|
RT
|
|
|
X
|
0
|
1
|
|
|
XI
|
|
|
0
|
0
|
0
|
|
|
|
|
Internal status
|
|
Write pointer
|
|
|
Location zero
|
Unchanged
|
Increment 1/
|
|
|
|
|
Outputs
|
|
FF
|
|
|
1
|
X
|
X
|
|
|
HF
|
|
|
1
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reset
|
Retransmit
|
Read/write
|
|
Read pointer
|
|
|
Location zero
|
Location zero
|
Increment 1/
|
|
EF
|
|
|
0
|
X
|
X
|
1/ Pointer will increment if flag is high.
Reset and first load
Depth expansion/compound expansion mode
|
|
|
|
|
Mode
|
|
|
Reset first device
|
Reset all other devices
|
Read/write
|
|
|
|
|
|
RS
|
|
|
0
|
0
|
1
|
Inputs
|
|
FL
|
|
|
0
|
1
|
X
|
|
|
XI
|
|
|
1/
|
1/
|
1/
|
|
|
|
|
Internal status
|
|
Write pointer
|
|
|
Location zero
|
Location zero
|
X
|
|
|
Outputs
|
|
|
|
EF
|
|
|
0
|
0
|
X
|
|
FF
|
|
|
1
|
1
|
X
|
|
|
|
|
|
|
|
|
|
|
|
|
Read pointer
|
|
|
Location zero
|
Location zero
|
X
|
1/ XI is connected to XO of previous device.
NOTES: RS = Reset input, FL / RT = First load/retransmit, EF = Empty flag output,
FF = Full flag output, XI = Expansion input, and HF = Half-full flag output
0 = Low level voltage
1 = High level voltage
X = Don't care
FIGURE 2. Truth tables.
STANDARD
MICROCIRCUIT DRAWING
DEFENSE SUPPLY CENTER COLUMBUS
COLUMBUS, OHIO 43216-5000
DSCC FORM 2234
APR 97
SIZE
A
REVISION LEVEL
C
5962-87531
SHEET
9
TEMIC [ TEMIC SEMICONDUCTORS ]
