參數(shù)資料
型號: ADSP-21371BSWZ-2B
廠商: Analog Devices Inc
文件頁數(shù): 17/48頁
文件大?。?/td> 0K
描述: IC DSP 32BIT 266MHZ 208-LQFP
產(chǎn)品培訓(xùn)模塊: SHARC Processor Overview
標準包裝: 1
系列: SHARC®
類型: 浮點
接口: DAI,DPI
時鐘速率: 266MHz
非易失內(nèi)存: ROM(512 kB)
芯片上RAM: 128kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.20V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 208-LQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 208-LQFP-EP(28x28)
包裝: 托盤
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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