參數(shù)資料
型號(hào): ADSP-21161NCCAZ100
廠商: Analog Devices Inc
文件頁(yè)數(shù): 39/60頁(yè)
文件大小: 0K
描述: IC DSP CONTROLLER 32BIT 225MBGA
產(chǎn)品培訓(xùn)模塊: SHARC Processor Overview
標(biāo)準(zhǔn)包裝: 1
系列: SHARC®
類型: 浮點(diǎn)
接口: 主機(jī)接口,連接端口,串行端口
時(shí)鐘速率: 100MHz
非易失內(nèi)存: 外部
芯片上RAM: 128kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.80V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 225-BGA,CSPBGA
供應(yīng)商設(shè)備封裝: 225-CSPBGA(17x17)
包裝: 托盤
其它名稱: ADSP21161NCCAZ100
Rev. C
|
Page 44 of 60
|
January 2013
Link Ports
Calculation of link receiver data setup and hold relative to link
clock is required to determine the maximum allowable skew
that can be introduced in the transmission path between
LDATA and LCLK. Setup skew is the maximum delay that can
be introduced in LDATA relative to LCLK,
(setup skew = tLCLKTWH min – tDLDCH – tSLDCL). Hold skew is the
maximum delay that can be introduced in LCLK relative to
LDATA, (hold skew = tLCLKTWL min – tHLDCH – tHLDCL). Calcula-
tions made directly from speed specifications will result in
unrealistically small skew times because they include multiple
tester guardbands. The setup and hold skew times shown below
are calculated to include only one tester guardband.
ADSP-21161N Setup Skew = 1.5 ns max
ADSP-21161N Hold Skew = 1.5 ns max
Note that there is a two-cycle effect latency between the link
port enable instruction and the DSP enabling the link port.
Table 28. Link Ports — Receive
Parameter
Min
Max
Unit
Timing Requirements
tSLDCL
Data Setup Before LCLK Low
1
ns
tHLDCL
Data Hold After LCLK Low
3.5
ns
tLCLKIW
LCLK Period
tLCLK
ns
tLCLKRWL
LCLK Width Low
4.0
ns
tLCLKRWH
LCLK Width High
4.0
ns
Switching Characteristics
tDLALC
LACK Low Delay After LCLK High1
812
ns
1 LACK goes low with t
DLALC relative to rise of LCLK after first nibble, but does not go low if the receiver's link buffer is not about to fill.
Figure 27. Link Ports—Receive
LCLK
LDAT7-0
LACK (OUT)
RECEIVE
IN
tSLDCL
tHLDCL
tDLALC
tLCLKRWL
tLCLKIW
tLCLKRWH
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ADSP-21161NKCA-100Z 制造商:Analog Devices 功能描述:
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