Released
Datasheet
PM73487 QRT
PMC-Sierra, Inc.
PMC-980618
Issue 3
622 Mbps ATM Traffic Management Device
Figure 51 shows the transmit UTOPIA 50 MHz timing.
1
2
3
4
5
6
7
8
9
ATM_CLK
TATM_DATA(15:0)
TATM_ADD(4:0)
TtdataQ
p
h
h
h
p
p
p
p
TtaddQ
1F
04
00
1F
01
1F
02
1F
03
TtwenQ
/TATM_WRITE_EN
Ttclavh
0
Ttclavsu
1
TATM_CLAV(3:0)
TATM_SOC
0
1
0
1
0
0
TtsocQ
TtparQ
TATM_PARITY
Figure 51. Transmit UTOPIA 50 MHz Timing
Symbol
Parameter
ATM_CLK frequency
Clock-to-output valid time
Ttclavsu Input setup time
Signals
Min
Max
Unit
ATM_CLK
55
12
MHz
ns
TtaddQ
TATM_ADD(4:0)
TATM_CLAV(3:0)
/TATM_WRITE_EN
TATM_SOC
3.4
2
ns
TtwenQ
TtsocQ
TtdataQ
Ttclavh
TtparQ
Clock-to-output valid time
3.3
3.3
3.3
2
9.5
9.5
12
ns
Clock-to-output valid time
Clock-to-output valid time
Input hold time
ns
TATM_DATA(15:0)
TATM_CLAV(3:0)
TATM_PARITY
ns
ns
Clock-to-output valid time
3.8
11
ns
78
PMC [ PMC-SIERRA, INC ]
