PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
17.5 SBI Interface (Figure 37 to Figure 39)
(T = -40°C to +85°C V
A
= 3.3V ±5%, V = 1.8V ±5%)
DD1V8
DDall33
Table 51 – Clocks and SBI Frame Pulse
Symbol
Description
Min
Max
Units
REFCLK Frequency
19.44 –
50ppm
19.44
+50ppm
MHz
REFCLK Duty Cycle
40
4
60
%
TS
AC1FP, DC1FP Set-Up Time to REFCLK
AC1FP, DC1FP Hold Time to REFCLK
REFCLK to C1FPOUT Valid
ns
ns
ns
C1FP
TH
0
C1FP
T
1
20
P
C1FPOUT
Figure 37 – SBI Frame Pulse Timing
REFCLK
tS
tH
C1FP
C1FP
AC1FP
DC1FP
tP
C1FPOUT
C1FPOUT
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
224
PMC [ PMC-SIERRA, INC ]
