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: 158/170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
146
Table 20
- TCLKI Input Timing (Figure 32)
Symbol
Description
Min
Max.
Units
tT1TCLKI
TCLKI Frequency for T1
1
(nominally 1.544 MHz ± 130 ppm)
1.545
MHz
tE1TCLKI
TCLKI Frequency for E1 (note 1)
1
(nominally 2.048 MHz ± 50 ppm)
2.049
MHz
tHTTCLKI
TCLKI High Duration (for T1
formats)
165
ns
tLTTCLKI
TCLKI Low Duration (for T1
formats)
165
ns
tHETCLKI
TCLKI High Duration (for E1
formats)
125
ns
tLETCLKI
TCLKI Low Duration (for E1
formats)
125
ns
tSTCLKI
TCLKI to TDD/TDP or TDN Input
Set-up Time
20
ns
tHTCLKI
TCLKI to TDD/TDP or TDN Input
Hold-up Time
20
ns
Figure 32
- TCLKI Input Timing
TCLKI[x]
tH
TTCLKI
, tH
ETCLKI
,
tL
TTCLKI
, tL
ETCLKI
,
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