参数资料
型号: ADSP-21371KSWZ-2B
厂商: Analog Devices Inc
文件页数: 17/48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
Precision Clock Generator (Direct Pin Routing)
This timing is only valid when the SRU is configured such that
the precision clock generator (PCG) takes its inputs directly
from the DAI pins (via pin buffers) and sends its outputs
directly to the DAI pins. For the other cases, where the PCG’s
Table 22. Precision Clock Generator (Direct Pin Routing)
inputs and outputs are not directly routed to/from DAI pins (via
pin buffers) there is no timing data available. All timing param
eters and switching characteristics apply to external DAI pins
(DAI_P01 – DAI_P20).
Parameter
Min
Max
Unit
Timing Requirements
tPCGIW
Input Clock Period
tSTRIG
PCG Trigger Setup Before Falling Edge of PCG Input
Clock
tHTRIG
PCG Trigger Hold After Falling Edge of PCG Input
Clock
Switching Characteristics
tDPCGIO
PCG Output Clock and Frame Sync Active Edge Delay
After PCG Input Clock
tDTRIGCLK
PCG Output Clock Delay After PCG Trigger
tDTRIGFS
PCG Frame Sync Delay After PCG Trigger
tPCGOW
1
Output Clock Period
24
4.5
3
2.5
2.5 + ((2.5) × tPCGIW)
2.5 + ((2.5 + D – PH) × tPCGIW)
2 × tPCGIW – 1
10
10 + ((2.5) × tPCGIW)
10 + ((2.5 + D – PH) × tPCGIW)
ns
D = FSxDIV, PH = FSxPHASE. For more information, see the ADSP-2136x SHARC Processor Hardware Reference for the ADSP-21368 Processor,
“Precision Clock Generators” chapter.
1 Normal mode of operation.
DAI_Pn
DPI_Pn
PCG_TRIGx_I
DAI_Pm
DPI_Pm
PCG_EXTx_I
(CLKIN)
DAI_Py
DPI_Py
PCG_CLKx_O
DAI_Pz
DPI_Pz
PCG_FSx_O
tSTRIG
tHTRIG
tDPCGIO
tDTRIGFS
tPCGIW
tPCGOW
tDTRIGCLK
tDPCGIO
Figure 14. Precision Clock Generator (Direct Pin Routing)
Rev. 0
|
Page 24 of 48
|
June 2007
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