參數(shù)資料
型號: ADSP-21262SKSTZ200
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: SHARC Processor
中文描述: 16-BIT, 66.67 MHz, OTHER DSP, PQFP144
封裝: LEAD FREE, MS-026BFB, LQFP-144
文件頁數(shù): 30/44頁
文件大小: 1295K
代理商: ADSP-21262SKSTZ200
Rev. A
|
Page 30 of 44
|
May 2004
ADSP-21262
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
DIA_P[20:0]
(SCLK)
DIA_P[20:0]
(FS)
DIA_P[20:0]
(DATA CHANNEL A/B)
DRIVE
SAMPLE
DRIVE
LATE EXTERNAL TRANSMIT FS
EXTERNAL RECEIVE FS WITH MCE = 1, MFD = 0
1ST BIT
2ND BIT
DIA_P[20:0]
(SCLK)
DIA_P[20:0]
(FS)
1ST BIT
2ND BIT
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
DIA_P[20:0]
(DATA CHANNEL A/B)
NOTE
SERIAL PORT SIGNALS (SCLK, FS,
DATA CHANNEL A/B
) ARE ROUTED TO THE DAI_P[20:1] PINS
USING THE SRU. THE TIMING SPECIFICATIONS PROVIDED HERE ARE VALID AT THE DAI_P[20:1] PINS.
t
HFSE/I
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