參數(shù)資料
型號: ADSP-21MOD870
廠商: Analog Devices, Inc.
英文描述: Internet Gateway Processor
中文描述: 互聯(lián)網網關處理器
文件頁數(shù): 24/32頁
文件大小: 231K
代理商: ADSP-21MOD870
ADSP-21mod870
TIMING PARAMETERS
–24–
REV. 0
Parameter
Min
Max
Unit
Serial Ports
Timing Requirements
:
t
SCK
t
SCS
t
SCH
t
SCP
Switching Characteristics
:
t
CC
t
SCDE
t
SCDV
t
RH
t
RD
t
SCDH
t
TDE
t
TDV
t
SCDD
t
RDV
SCLK Period
DR/TFS/RFS Setup before SCLK Low
DR/TFS/RFS Hold after SCLK Low
SCLK
IN
Width
38
4
7
15
ns
ns
ns
ns
CLKOUT High to SCLK
OUT
SCLK High to DT Enable
SCLK High to DT Valid
TFS/RFS
OUT
Hold after SCLK High
TFS/RFS
OUT
Delay from SCLK High
DT Hold after SCLK High
TFS (Alt) to DT Enable
TFS (Alt) to DT Valid
SCLK High to DT Disable
RFS
(Multichannel, Frame Delay Zero) to DT Valid
0.25 t
CK
0
0.25 t
CK
+ 10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
15
0
15
0
0
14
15
15
CLKOUT
SCLK
TFS
OUT
ALTERNATE
RFS
DT
t
CC
t
CC
t
SCS
t
SCH
t
RH
t
SCDE
t
SCDH
t
SCDD
t
TDE
t
RDV
MULTIFRAME DELAY 0
(MFD = 0)
DR
TFS
IN
RFS
IN
RFS
OUT
TFS
OUT
t
TDV
t
SCDV
t
RD
t
SCP
t
SCK
t
SCP
TFS
IN
RFS
ALTERNATE
t
RDV
MULTIFRAME DELAY 0
(MFD = 0)
t
TDV
t
TDE
Figure 26. Serial Ports
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