參數(shù)資料
型號: PEB2245N
廠商: SIEMENS AG
英文描述: ?Multipoint Switching and Conferencing Unit - Attenuation?
中文描述: ?多點交換和會議股-衰減?
文件頁數(shù): 50/70頁
文件大?。?/td> 1021K
代理商: PEB2245N
PEB 2245
Semiconductor Group
50
Parameter
PCM-Interface Timing
Symbol
Limit Values
Unit
min.
max.
ALE pulse width
t
AA
t
AL
t
LA
t
ALS
t
AS
t
AH
t
AD
t
DSD
t
RR
t
RD
t
DF
t
RI
t
WW
t
DW
t
WD
t
WI
50
ns
Address setup time to ALE
20
ns
Address hold time from ALE
10
ns
Address latch setup time to WR, RD
ns
Address setup time to WR, RD
10
ns
Address hold time from WR, RD
20
ns
ALE pulse delay
15
ns
DS delay after R/W setup
0
ns
RD pulse width
110
ns
Data output delay from RD
110
ns
Data float from RD
25
ns
RD control interval
70
ns
WR pulse width
60
ns
Data setup time to WR + CS
35
ns
Data hold time from WR + CS
10
ns
WR control interval
70
ns
Parameter
Symbol
Limit Values
Unit
min.
max.
PCM-input setup
t
S
t
H
t
D
t
T
15
ns
PCM-input hold
30
ns
Output delay
45
ns
Tristate delay
55
ns
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