參數(shù)資料
型號(hào): T7121-PL2
英文描述: T7121 HDLC Interface for ISDN
中文描述: T7121的HDLC接口用于ISDN
文件頁數(shù): 55/68頁
文件大?。?/td> 685K
代理商: T7121-PL2
Lucent Technologies Inc.
55
Data Sheet
April 1997
T7121 HDLC Interface for ISDN (HIFI-64)
Timing Characteristics
(continued)
Concentration Highway
Table 28. Concentration Highway Timing for CMS = 0
Symbol on
Diagram
A
B
C
D
E
F
G
H
I
J
Name
Parameter
Min
Max
Unit
tDCLDCL
tFSHCKE
tCKEFSL
tCEDV
tCEDT
tCETSL
tCETST
tDVRCE
tRCEDI
tFSFS
CLKX/R Period
FS High to CLKX/R Edge Selected
FS Hold After CLKX/R Edge Selected
CLKX Edge to Data Valid
CLKX Edge to Data 3-state
CLKX Edge to
TSCA
Low
CLKX Edge to
TSCA
3-state
Receive Data Setup Time
Receive Data Hold Time
FS Period
244
50
50
0
0
25
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tDCLDCL – 30
80
45
70
70
512 tDCLDCL
9 tDCLDCL
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