參數(shù)資料
型號: ADSP-21261SKBCZ150
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: SHARC Embedded Processor
中文描述: 16-BIT, 50 MHz, OTHER DSP, PBGA136
封裝: LEAD FREE, MO-205AE, BGA-136
文件頁數(shù): 30/44頁
文件大?。?/td> 396K
代理商: ADSP-21261SKBCZ150
Rev. 0
|
Page 30 of 44
|
March 2006
ADSP-21261
Table 25. Serial Ports—Enable and Three-State
Parameter
Switching Characteristics
t
DDTEN
t
DDTTE
t
DDTIN
Min
Max
Unit
Data Enable from External Transmit SCLK
1
Data Disable from External Transmit SCLK
1
Data Enable from Internal Transmit SCLK
1
2
ns
ns
ns
7
–1
1
Referenced to drive edge.
Table 26. Serial Ports—External Late Frame Sync
Parameter
Switching Characteristics
t
DDTLFSE
Min
Max
Unit
Data Delay from Late External Transmit FS or External Receive FS
with MCE = 1, MFD = 0
1
Data Enable for MCE = 1, MFD = 0
1
7
ns
ns
t
DDTENFS
0.5
1
The t
DDTLFSE
and t
DDTENFS
parameters apply to left-justified sample pair mode as well as DSP serial mode, and MCE = 1, MFD = 0.
Figure 21. External Late Frame Sync
1
1
This figure reflects changes made to support left-justified sample pair mode.
DRIVE
SAMPLE
DRIVE
DAI_P20–1
(SCLK)
DAI_P20–1
(FS)
DAI_P20–1
(DATACHANNELA/B)
DRIVE
SAMPLE
DRIVE
LATEEXTERNAL TRANSMIT FS
EXTERNAL RECEIVEFS WITHMCE= 1, MFD= 0
1ST BIT
2NDBIT
DAI_P20–1
(SCLK)
DAI_P20–1
(FS)
1ST BIT
2NDBIT
t
HFSE/I
t
SFSE/I
t
DDTE/I
t
DDTENFS
t
DDTLFSE
t
HDTE/I
t
SFSE/I
t
DDTE/I
t
DDTENFS
t
DDTLFSE
t
HDTE/I
DAI_P20–1
(DATACHANNELA/B)
NOTE: SERIALPORTSIGNALS (SCLK, FS,
DATACHANNEL A/B
) ARE ROUTEDTO THE DAI_P[20:1] PINS
USINGTHESRU. THE TIMINGSPECIFICATIONS PROVIDEDHERE ARE VALIDATTHE DAI_P[20:1] PINS.
t
HFSE/I
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