PM4328 Datasheet, PDF (235/250 Pages) PMC-Sierra, Inc – High Density T1/E1 Framer with Integrated M13 Multiplexer

STANDARD PRODUCT
DATASHEET
PMC-2011596
ISSUE 1
PM4328 TECT3
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
Table 41: Egress Interface Timing - Clock Slave: External Signaling (Figure
91)
Symbol
t1CECLK
t0CECLK
t1CECLK
t0CECLK
tSCECLK
tHCECLK
Description
Min
Common Egress Clock
1.5
Frequency^1,2(Typically 1.544 MHz ±
130 ppm or 2.048 MHz ± 130 ppm for
T1 modes and 2.048 MHz ±50ppm
for E1 modes)
Common Egress High Pulse Width^{2,4 167}
(XCLK = 37.056 MHz)
Common Egress Low Pulse Width^{2,4 167}
(XCLK = 37.056 MHz)
Common Egress High Pulse Width^{2,4 145}
(XCLK = 49.152 MHz)
Common Egress Low Pulse Width^{2,4 145}
(XCLK = 49.152 MHz)
CECLK to Input Set-up Time^7,9
20
CECLK to Input Hold Time^8,9
20
Max Units
2.1 MHz
ns
ns
ns
ns
ns
ns
Figure 91: Egress Interface Timing - Clock Slave: External Signaling Mode
CEFP
ED[x]
ESIG[x]
CECLK
Valid
tS
CECLK
t0
CECLK
tH
CECLK
t1
CECLK
PROPRIETARY AND CONFIDENTIAL
222