參數(shù)資料
型號: ADSP-21267SKSTZ-X
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: Preliminary Technical Data
中文描述: 16-BIT, 50 MHz, OTHER DSP, PQFP144
封裝: MS-026BFB, LQFP-144
文件頁數(shù): 31/44頁
文件大?。?/td> 454K
代理商: ADSP-21267SKSTZ-X
ADSP-21267
Rev. PrA
|
Page 31 of 44
|
January 2004
PRELIMINARY TECHNICAL DATA
Input Data Port (IDP)
The timing requirements for the IDP are given in
Table 26
. IDP
Signals (SCLK, FS, SDATA) are routed to the DAI_P[20:1] pins
using the SRU. Therefore, the timing specifications provided
below are valid at the DAI_P[20:1] pins.
Table 26. Input Data Port
Parameter
Timing Requirements
t
SISFS
t
SIHFS
t
SISD
t
SIHD
t
IDPCLKW
t
IDPCLK
Min
Max
Unit
FS Setup Before SCLK Rising Edge
1
FS Hold After SCLK Rising Edge
1
SData Setup Before SCLK Rising Edge
1
SData Hold After SCLK Rising Edge
1
Clock Width
Clock Period
2.5
2.5
2.5
2.5
7
20
ns
ns
ns
ns
ns
ns
1
DATA, SCLK, FS can come from any of the DAI pins. SCLK and FS can also come via the Precision Clock Generators (PCG) or SPORTs. PCG's input can be either
CLKIN or any of the DAI pins.
Figure 23. IDP Master Timing
DAI_P[20:1]
(SCLK)
DAI_P[20:1]
(FS)
SAMPLE EDGE
t
SISD
t
SIHD
t
SISFS
t
SIHFS
t
IDPCLKW
DAI_P[20:1]
(SDATA)
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