参数资料
型号: ADSP-21371KSWZ-2B
厂商: Analog Devices Inc
文件页数: 31/48页
文件大小: 0K
描述: IC DSP 32BIT 266MHZ 208-LQFP
产品培训模块: SHARC Processor Overview
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI
时钟速率: 266MHz
非易失内存: ROM(512 kB)
芯片上RAM: 128kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 208-LQFP 裸露焊盘
供应商设备封装: 208-LQFP-EP(28x28)
包装: 托盘
ADSP-21371
S/PDIF Transmitter Input Data Timing
The timing requirements for the S/PDIF transmitter are given
in Table 34. Input signals (SCLK, FS, SDATA) are routed to the
DAI_P20–1 pins using the SRU. Therefore, the timing specifica
tions provided below are valid at the DAI_P20–1 pins.
Table 34. S/PDIF Transmitter Input Data Timing
Parameter
Min
Max
Unit
Timing Requirements
tSISFS
1
FS Setup Before SCLK Rising Edge
3
ns
tSIHFS
1
FS Hold After SCLK Rising Edge
3
ns
tSISD
1
SData Setup Before SCLK Rising Edge
3
ns
tSIHD
1
SData Hold After SCLK Rising Edge
3
ns
tSITXCLKW
Transmit Clock Width
9
ns
tSITXCLK
Transmit Clock Period
20
ns
tSISCLKW
Clock Width
36
ns
tSISCLK
Clock Period
80
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.
DAI_P20-1
(SCLK)
DAI_P20-1
(FS)
SAMPLE EDGE
tSISD
tSISFS
tSISCLKW
DAI_P20-1
(SDATA)
DAI_P20-1
(TXCLK)
tSIHD
tSIHFS
tSITXCLKW
tSITXCLK
tSISCLK
Figure 27. S/PDIF Transmitter Input Timing
Oversampling Clock (TxCLK) Switching Characteristics
The S/PDIF transmitter has an oversampling clock. This TxCLK
input is divided down to generate the biphase clock.
Table 35. Over Sampling Clock (TxCLK) Switching Characteristics
Parameter
Min
Max
Unit
TxCLK Frequency for TxCLK = 384 × FS
73.8
MHz
TxCLK Frequency for TxCLK = 256 × FS
49.2
MHz
Frame Rate
192.0
kHz
Rev. 0
|
Page 37 of 48
|
June 2007
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