a2f500m3b-1csh484 Actel Corporation, a2f500m3b-1csh484 Datasheet - Page 87

• Manufacturer Part Number: a2f500m3b-1csh484
• Description: Actel
• Manufacturer: Actel Corporation

Figure 2-39 • FIFO FULL Flag and AFULL Flag Assertion
Figure 2-40 • FIFO EMPTY Flag and AEMPTY Flag Deassertion
Figure 2-41 • FIFO FULL Flag and AFULL Flag Deassertion
(Address Counter)
(Address Counter)
(Address Counter)
AEMPTY
WA/RA
WCLK
FULL
AFULL
EMPTY
WA/RA
WCLK
RCLK
WA/RA
RCLK
AFULL
WCLK
FULL
MATCH (FULL)
MATCH
(EMPTY)
NO MATCH
1st Rising
After 1st
Edge
Write
1st Rising
After 1st
Edge
Read
NO MATCH
NO MATCH
t
NO MATCH
2nd Rising
CYC
After 1st
Edge
Write
1st Rising
After 2nd
NO MATCH
Edge
Read
NO MATCH
t
RCKEF
R e v i s i o n 3
t
WCKF
t
CKAF
NO MATCH
NO MATCH
Actel SmartFusion Intelligent Mixed Signal FPGAs
Dist = AFF_TH
NO MATCH
NO MATCH
t
WCKFF
t
CKAF
t
CKAF
Dist = AEF_TH + 1
MATCH (FULL)
Dist = AFF_TH – 1
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