lxt6155 Intel Corporation, lxt6155 Datasheet - Page 38

• Manufacturer Part Number: lxt6155
• Description: 155 Mbps Sdh/sonet/atm Transceiver
• Manufacturer: Intel Corporation

38
LXT6155 — 155 Mbps SDH/SONET/ATM Transceiver
Transmit serial input clock frequency
Transmit serial input clock frequency error
Transmit serial input clock duty cycle
Transmit serial input clock and data rise /fall
time
Transmit parallel input clock frequency
Transmit parallel input clock frequency error
Transmit parallel input clock duty cycle
Transmit parallel input data & clock rise/fall
time
TPICLK to TPID<0:7> hold time
TPICLK to TPID<0:7> setup time
TSICLKP(TSICLKN) to TPOS (TNEG) setup
time
TSICLKP (TSICLKN) to TPOS (TNEG) hold
time
1. Typical values are at 25C and 3.3V. They are for design aid only; not guaranteed and not subject to production testing.
2. Not production tested, guaranteed by design and other correlation factors.
TPID<0:7>
Table 28. Transmit Timing Characteristics (See Figures 18 and 19)
Figure 18. Transmit Parallel Input Data Timing (See Table 28)
Figure 19. Transmit Serial Input Data Timing (See Table 28)
2
2
TPICLK*
TSICLKN
TSICLKP
*HW mode timing shown. In SW mode (HWSEL=1) TPICLK polarity can be inverted. See Table 8 for details.
TNEG
TPOS
Parameter
Tstpid
Tstpos
Thtpos
Tstpos
Thtpid
Tstpid
Sym
1.25
0.75
Min
-20
-20
45
45
2
3
2
Thtpid
Thtpos
155.52
19.44
Typ
1
Max
+20
+20
1.2
55
55
10
MHz
MHz
Unit
ppm
ppm
ns
ns
ns
ns
ns
ns
%
%
Compliant with GR253
20% - 80%
Test Conditions
Datasheet