IDT7200L IDT [Integrated Device Technology], IDT7200L Datasheet - Page 11

• Manufacturer Part Number: IDT7200L
• Description: CMOS ASYNCHRONOUS FIFO 256 x 9, 512 x 9, 1,024 x 9
• Manufacturer: IDT [Integrated Device Technology]

IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9
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 TRUTH TABLE
Depth Expansion/Compound Expansion Mode
NOTE:
1.
Reset First Device
Reset All Other Devices
Read/Write
Reset
Retransmit
Read/Write
XI
XI
is connected to
= Expansion Input,
Mode
Mode
FULL
XO
RS
W
D
of previous device. See Figure 14.
HF
Figure 14. Block Diagram of 768 x 9, 1,536 x 9, 3,072 x 9 FIFO Memory (Depth Expansion)
= Half-Full Flag Output
RS RS
RS RS
0
0
1
0
1
1
9
Inputs
Inputs
RT RT
FL FL
X
X
0
1
0
1
RS
(1)
(1)
(1)
XI XI
XI XI
9
9
0
0
0
= Reset Input,
FF
FF
FF
9
Read Pointer
Location Zero
Location Zero
Location Zero
Location Zero
Increment
Read Pointer
7201A/
7201A/
7201A/
7202A
7202A
7202A
7200/
7200/
7200/
IDT
IDT
IDT
FL
MILITARY, INDUSTRIAL AND COMMERCIAL TEMPERATURE RANGES
X
XO
XO
XO
XI
/
XI
XI
RT
(1)
Internal Status
Internal Status
= First Load/Retransmit,
EF
EF
FL
FL
FL
EF
Write Pointer
Location Zero
Location Zero
Location Zero
Unchanged
Increment
Write Pointer
X
(1)
EF
9
= Empty Flag Output,
EF EF
X
X
0
EF EF
0
X
0
2679 drw 16
Outputs
Outputs
R
Q
V
EMPTY
CC
FF
FF FF
X
X
1
= Flag Full Output,
FF FF
1
1
X
2679 tbl 10
2679 tbl 09
HF HF
X
X
1
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