參數(shù)資料
型號: ADSP-21363KBC-1AA
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, 55.55 MHz, OTHER DSP, PBGA136
封裝: MO-205AE, CSBGA-136
文件頁數(shù): 35/52頁
文件大?。?/td> 1320K
代理商: ADSP-21363KBC-1AA
ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
Rev. A
|
Page 35 of 52
|
December 2006
Parallel Data Acquisition Port (PDAP)
The timing requirements for the PDAP are provided in
Table 31
. PDAP is the parallel mode operation of Channel 0 of
the IDP. For details on the operation of the IDP, see the IDP
chapter of the
ADSP-2136x SHARC Processor
Hardware Reference
. Note that the most significant 16 bits of
external PDAP data can be provided through either the parallel
port AD15–0 or the DAI_P20–5 pins. The remaining 4 bits can
only be sourced through DAI_P4–1. The timing below is valid
at the DAI_P20–1 pins or at the AD15–0 pins.
Table 31. Parallel Data Acquisition Port (PDAP)
Parameter
Timing Requirements
t
SPCLKEN
1
t
HPCLKEN
1
t
PDSD
1
t
PDHD
1
t
PDCLKW
t
PDCLK
Min
Max
Unit
PDAP_CLKEN Setup Before PDAP_CLK Sample Edge
PDAP_CLKEN Hold After PDAP_CLK Sample Edge
PDAP_DAT Setup Before SCLK PDAP_CLK Sample Edge
PDAP_DAT Hold After SCLK PDAP_CLK Sample Edge
Clock Width
Clock Period
2.5
2.5
3.0
2.5
7.0
24
ns
ns
ns
ns
ns
ns
Switching Characteristics
t
PDHLDD
t
PDSTRB
Delay of PDAP Strobe After Last PDAP_CLK Capture Edge for a Word
PDAP Strobe Pulse Width
2 × t
PCLK
– 1
2 × t
PCLK
– 1.5
ns
ns
1
Source pins of DATA are ADDR7–0, DATA7–0, or DAI pins. Source pins for SCLK and FS are: 1) DAI pins, 2) CLKIN through PCG, or 3) DAI pins through PCG.
Figure 25. PDAP Timing
DAI_P20
-
1
(PDAP_CLK)
SAMPLE EDGE
t
PDSD
t
PDHD
t
SPCLKEN
t
HPCLKEN
t
PDCLKW
DATA
DAI_P20
-
1
(PDAP_CLKEN)
t
PDSTRB
t
PDHLDD
DAI_P20
-
1
(PDAP_STROBE)
t
PDCLK
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