IDT723614 CMOS SYNCBIFIFO™ WITH BUS-MATCHING
AND BYTE SWAPPING 64 x 36 x 2
SW1 SW0
LL
LL
A35⎯A27
A
A26⎯A18
B
A17⎯A9
C
A
B35⎯B27
B
C
B26⎯B18 B17⎯B9
(a) NO SWAP
SW1 SW0
LH
A35⎯A27
A
A26⎯A18
B
A17⎯A9
C
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
A8⎯A0
D
D
B8⎯B0
A8⎯A0
D
SW1 SW0
HL
D
B35⎯B27
C
B
B26⎯B18 B17⎯B9
(b) BYTE SWAP
A
B8⎯B0
A35⎯A27
A
A26⎯A18
B
A17⎯A9
C
A8⎯A0
D
SW1 SW0
HH
C
B35⎯B27
D
A
B26⎯B18 B17⎯B9
(c) WORD SWAP
B
B8⎯B0
A35⎯A27
A
A26⎯A18
B
A17⎯A9
C
A8⎯A0
D
B
B35⎯B27
A
D
B26⎯B18 B17⎯B9
(d) BYTE-WORD SWAP
Figure 4. Byte Swapping (Long Word Size Example)
C
B8⎯B0
3146 fig03
COMMERCIAL AND INDUSTRIAL
15
JANUARY 14, 2009