IDT7203 IDT [Integrated Device Technology], IDT7203 Datasheet - Page 12

• Manufacturer Part Number: IDT7203
• Description: CMOS ASYNCHRONOUS FIFO 2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9
• Manufacturer: IDT [Integrated Device Technology]

IDT7203/7204/7205/7206 CMOS ASYNCHRONOUS FIFO
2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9
TRUTH TABLES
TABLE I – RESET AND RETRANSMIT
SINGLE DEVICE CONFIGURATION/WIDTH EXPANSION MODE
NOTE:
1. Pointer will Increment if flag is HIGH.
TABLE II – RESET AND FIRST LOAD
DEPTH EXPANSION/COMPOUND EXPANSION MODE
NOTES:
1.
2.
Reset
Retransmit
Read/Write
Reset First Device
Reset all Other Devices
Read/Write
XI
RS
is connected to
= Reset Input,
Mode
Mode
FULL
RS
FL/RT
XO
W
Figure 14. Block Diagram of 6149 x 9/12298 x 9/24596 x 9/49152 x 9 FIFO Memory (Depth Expansion)
D
of previous device. See Figure 14.
= First Load/Retransmit,
RS
RS
RS
0
1
1
RS
0
0
1
9
Inputs
Inputs
RT
RT
X
0
1
FL
FL
0
1
X
EF
XI
XI
0
0
0
(1)
(1)
(1)
XI
XI
= Empty Flag Output,
9
9
Read Pointer
Location Zero
Location Zero
Increment
FF
FF
FF
9
Read Pointer
Location Zero
Location Zero
Internal Status
7203/
7204/
7205/
7203/
7204/
7205/
7203/
7204/
7205/
7206
7206
7206
IDT
IDT
IDT
X
(1)
5.04
XO
XO
XO
XI
XI
XI
Internal Status
FF
Write Pointer
Location Zero
Unchanged
Increment
= Full Flag Output,
EF
EF
FL
FL
FL
EF
Write Pointer
Location Zero
Location Zero
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(1)
X
XI
9
= Expansion Input,
EF
EF
X
X
0
2661 drw 16
EF
EF
0
0
X
Outputs
R
Q
V
EMPTY
HF
CC
FF
FF
X
X
1
Outputs
= Half-Full Flag Output
FF
FF
1
1
X
HF
HF
X
X
1
2661 tbl 09
2661 tbl 10
12