ProASICPLUS Flash Family FPGAs
v5.9
2-71
Synchronous FIFO Write
Note: The plot shows the normal operation status.
Figure 2-44 Synchronous FIFO Write
Table 2-67 TJ = 0°C to 110°C; VDD = 2.3 V to 2.7 V for Commercial/Industrial
TJ = –55°C to 150°C, VDD = 2.3 V to 2.7 V for Military/MIL-STD-883
Symbol txxx
Description
Min.
Max.
Units
Notes
CCYC
Cycle time
7.5
ns
CMH
Clock high phase
3.0
ns
CML
Clock low phase
3.0
ns
DCH
DI hold from WCLKS
↑
0.5
ns
DCS
DI setup to WCLKS
↑
1.0
ns
FCBA
New FULL access from WCLKS
↓
3.0*
ns
ECBA
EMPTY
↓ access from WCLKS ↓
3.0*
ns
ECBH,
FCBH,
HCBH
Old EMPTY, FULL, EQTH, & GETH valid hold
time from WCLKS
↓
1.0
ns
Empty/full/thresh are invalid from the end of
hold until the new access is complete
HCBA
EQTH or GETH access from WCLKS
↓
4.5
ns
WPCA
New WPE access from WCLKS
↑
3.0
ns
WPE is invalid, while PARGEN is active
WPCH
Old WPE valid from WCLKS
↑
0.5
ns
WRCH, WBCH WRB & WBLKB hold from WCLKS
↑
0.5
ns
WRCS, WBCS
WRB & WBLKB setup to WCLKS
↑
1.0
ns
Note: * At fast cycles, ECBA and FCBA = MAX (7.5 ns – CMH), 3.0 ns.
WCLKS
WPE
DI
EMPTY
EQTH, GETH
FULL
(Full Inhibits Write)
WRB, WBLKB
Cycle Start
tWRCH, tWBCH
tECBH, tFCBH
tECBA, tFCBA
tHCBA
tWRCS, tWBCS
tDCS
tCMH
tCML
tCCYC
tWPCH
tDCH
tHCBH