IBM3009K2672
IBM SONET/SDH Framer
APS Port Timing
tCYC
ACHCLK
(Input)
tPWH
TXAPSxxx
RXAPSxxx
(Outputs)
tD
tSU1
TXAPSxxx
RXAPSxxx
(Inputs)
tH1
C at outputs: 5 pF - 30 pF
L
Symbol
Parameter
Min
38.4
40
Typ
40
Max
44
Unit
ns
%
tCYC
tPWH / tCYC
tD
ACHCLK clock period
ACHCLK clock duty cycle
60
TXAPSxxx/RXAPSxxx output delay after ACHCLK↑
TXAPSxxx/RXAPSxxx set-up time to ACHCLK↑
TXAPSxxx/RXAPSxxx hold time after ACHCLK↑
TXAPSxxx/RXAPSxxx output rise/fall times
5.0
0.5
2.5
1.5
18.5
ns
ns
ns
ns
tSU1
tH1
tr, tf
8.0
Timing Characteristics
Page 68 of 279
ssframer.01
8/27/99
IBM [ IBM ]
