參數(shù)資料
型號: T8538B
元件分類: Codec
英文描述: T8538B Quad Programmable Codec
中文描述: T8538B四可編程編解碼器
文件頁數(shù): 31/44頁
文件大?。?/td> 847K
代理商: T8538B
Agere Systems Inc.
31
Preliminary Data Sheet
August 2001
T8538B Quad Programmable Codec
Timing Characteristics
Control Interface Timing
Serial Control Port Timing
Table 13. Serial Control Port Timing
(See Figures 20 and 21.)
* The t
SXBDLY
delay is from either DCLK or CS, whichever transition is later, for the first bit of the byte.
Symbol
f
DCLK
t
CSSETUP
t
CSHOLD
t
SXDLY
t
SDHOLD
t
SDSETUP
t
SDZ
t
RISE
t
FALL
t
RISE
,
t
FALL
t
CSBHOLD
t
SXBDLY
t
CSBSETUP
Chip Select Setup Time, Byte-by-Byte Mode
t
SDBHOLD
Data Hold Time, Byte-by-Byte Mode
t
SDBSETUP
Data Setup Time, Byte-by-Byte Mode
Parameter
Test Conditions
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
I
L
= 15 mA,
C
LOAD
= 100 pF
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz*
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
D
CLK
= 4.096 MHz
Min
40
7
4
4
7
100
Typ
50
Max
4096
60
9
12
12
30
Unit
kHz
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
Clock Frequency (all commands)
Clock Duty Cycle
Chip Select Setup Time, Normal Mode
Chip Select Hold Time, Normal Mode
Output Data Delay, Normal Mode
Input Data Hold Time, Normal Mode
Input Data Setup Time, Normal Mode
Output Data, High Impedance
Clock Edge Rise Time
Clock Edge Fall Time
Line Driver Rise/Fall Time (DO output)
Chip Select Hold Time, Byte-by-Byte Mode
Output Data Delay, Byte-by-Byte Mode
4
7
4
7
9
ns
ns
ns
ns
ns
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