UPD98404 Datasheet, PDF (28/36 Pages) NEC – ADVANCED ATM SONET FRAMER

µPD98404
PMD parallel interface (receive side)
Parameter
RPC cycle time
RPC high level width
RPC low level width
RPD0 - RPD7 setup time (to RPC↑)
RPD0 - RPD7 hold time (to RPC↑)
Symbol
tCYRP
tWRPH
tWRPL
tSPDRP
tHPDRP
tWRPH
RPC
tCYRP
tWRPL
RPD0-7
tSPDRP
Condition
MIN.
TYP.
MAX.
Unit
50
ns
0.4 × tCYRP
0.4 × tCYRP
10
0.6 × tCYRP
ns
0.6 × tCYRP
ns
ns
5
ns
tHPDRP
PMD parallel interface (transmit side)
Parameter
TFC cycle time
TFC high level width
TFC low level width
TFC↑ → TPC↑ delay time
TFC↓ → TPC↓ delay time
TPC↑ → TPD0-TPD7 delay time
Symbol
Condition
MIN.
TYP.
MAX.
Unit
tCYTF
tWTFH
50
0.4 × tCYTF
ns
0.6 × tCYTF
ns
tWTFL
0.4 × tCYTF
0.6 × tCYTF
ns
tDPCTFH Load capacity = 50 pF
25
ns
tDPCTFL Load capacity = 50 pF
25
ns
tDPDTC Load capacity = 50 pF
–5
+5
ns
tWTFH
TFC
TPC
tCYTF
tWTFL
tDPCTFH
TPD0-7
tDPCTFL
tDPDTC
28
Data Sheet S11822EJ4V0DS00