参数资料
型号: PM4314
厂商: PMC-SIERRA INC
元件分类: 数字传输电路
英文描述: QUAD T1/E1 LINE INTERFACE DEVICE
中文描述: DATACOM, PCM TRANSCEIVER, PQFP128
封装: 14 X 20 MM, PLASTIC, QFP-128
文件页数: 165/170页
文件大小: 823K
代理商: PM4314
PM4314 QDSX
DATA SHEET
PMC-950857
ISSUE 5
QUAD T1/E1 LINE INTERFACE DEVICE
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
153
Table 25
-
Analog Receive Data Input Timing (Figure 37)
Symbol
Description
Min
Max.
Units
tWE1AIN
Receive Analog Data Signal Pulse
Width in CEPT E1 mode
5
200
300
ns
tWT1AIN
Receive Analog Data Signal Pulse
Width in T1 mode
5
250
400
ns
Figure 37
- Analog Receive Data Input Timing Diagram
RXTIP
t
AIN
W
t
AIN
W
Notes on Input Timing:
1. TCLKI can be a jittered clock signal subject to the minimum high and low
durations tHTTCLKI, tLTTCLKI, tHETCLKI, and tLETCLKI. These durations
correspond to the nominal XCLK input frequency for the selected DSX-1 or
CEPT E1 format. Proper operation when TCLKI is a jittered clock is
guaranteed by the design of the DJAT, and thus is not completely production
tested.
2. When a set-up time is specified between an input and a clock, the set-up time
is the time in nanoseconds from the 1.4 Volt point of the input to the 1.4 Volt
point of the clock.
3. When a hold time is specified between an input and a clock, the hold time is
the time in nanoseconds from the 1.4 Volt point of the clock to the 1.4 Volt
point of the input.
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