參數(shù)資料
型號: ASDP-21365BBCZ-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, BGA-136
文件頁數(shù): 39/52頁
文件大?。?/td> 1320K
代理商: ASDP-21365BBCZ-1AA
ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
Rev. A
|
Page 39 of 52
|
December 2006
SPDIF Transmitter Input Data Timing
The timing requirements for the input port are given in
Table 35
. Input signals (SCLK, FS, and SDATA) are routed to
the DAI_P20–1 pins using the SRU. Therefore, the timing spec-
ifications provided below are valid at the DAI_P20–1 pins.
Oversampling Clock (TXCLK) Switching Characteristics
SPDIF Transmitter has an over sampling clock. This TXCLK
input is divided down to generate the biphase clock.
Table 35. SPDIF Transmitter Input Data Timing
Parameter
Timing Requirements
t
SISFS
1
t
SIHFS
1
t
SISD
1
t
SIHD
1
t
SISCLKW
t
SISCLK
t
SITXCLKW
t
SITXCLK
Min
Max
Unit
FS Setup Before SCLK Rising Edge
FS Hold After SCLK Rising Edge
SDATA Setup Before SCLK Rising Edge
SDATA Hold After SCLK Rising Edge
Clock Width
Clock Period
Transmit Clock Width
Transmit Clock Period
3
3
3
3
36
80
9
20
ns
ns
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 PCG or SPORTs. PCG’s input can be either CLKIN or any of the DAI pins.
Figure 32. SPDIF Transmitter Input Timing
DAI_P20
-
1
(SCLK)
DAI_P20
-
1
(FS)
SAMPLE EDGE
t
SISD
t
SISFS
t
SISCLKW
DAI_P20
-
1
(SDATA)
DAI_P20
-
1
(TXCLK)
t
SIHD
t
SIHFS
t
SITXCLKW
t
SITXCLK
Table 36. Oversampling Clock (TXCLK) Switching Characteristics
Parameter
TXCLK Frequency for TXCLK = 768 × FS
TXCLK Frequency for TXCLK = 512 × FS
TXCLK Frequency for TXCLK = 384 × FS
TXCLK Frequency for TXCLK = 256 × FS
Frame Rate
Min
Max
147.5
98.4
73.8
49.2
192.0
Unit
MHz
MHz
MHz
MHz
kHz
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