IDT723653 Datasheet, PDF (15/29 Pages) Integrated Device Technology – CMOS SyncFIFO WITH BUS-MATCHING

IDT723653/723663/723673 CMOS SyncFIFO^TM WITH BUS-MATCHING
2,048 x 36 x 2, 4,096 x 36 x 2 and 8,192 x 36 x 2
BYTE ORDER ON PORT A:
A35  A27
A
A26  A18
B
A17  A9
C
COMMERCIAL TEMPERATURE RANGE
A8  A0
D
Write to FIFO
BYTE ORDER ON PORT B:
BE BM SIZE
XL X
BE BM SIZE
H HL
BE BM SIZE
LH L
BE BM SIZE
HHH
BE BM SIZE
LH H
B35  B27
A
B26  B18
B
B17  B9
C
(a) LONG WORD SIZE
B8  B0
D
Read from FIFO
B35  B27 B26  B18
B17  B9
A
B35  B27 B26  B18
B17  B9
C
(b) WORD SIZE  BIG-ENDIAN
B35  B27
B26  B18
B17  B9
C
B8  B0
B
1st: Read from FIFO
B8  B0
D
2nd: Read from FIFO
B8  B0
D
1st: Read from FIFO
B35  B27
B26  B18
B17  B9
A
B8  B0
B
2nd: Read from FIFO
(c) WORD SIZE  LITTLE-ENDIAN
B35  B27 B26  B18 B17  B9
B8  B0
A
1st: Read from FIFO
B35  B27 B26  B18 B17  B9
B8  B0
B
2nd: Read from FIFO
B35  B27 B26  B18 B17  B9
B8  B0
C
3rd: Read from FIFO
B35  B27 B26  B18 B17  B9
(d) BYTE SIZE  BIG-ENDIAN
B35  B27 B26  B18 B17  B9
B8  B0
D
4th: Read from FIFO
B8  B0
D
1st: Read from FIFO
B35  B27 B26  B18 B17  B9
B8  B0
C
2nd: Read from FIFO
B35  B27 B26  B18 B17  B9
B8  B0
B
3rd: Read from FIFO
B35  B27 B26  B18 B17  B9
(e) BYTE SIZE  LITTLE-ENDIAN
Figure 2. Bus sizing
15
B8  B0
A
4th: Read from FIFO
5610 drw 04