參數(shù)資料
型號(hào): ADSP-21266
廠商: Analog Devices, Inc.
英文描述: SHARC Embedded Processor
中文描述: SHARC處理器嵌入式處理器
文件頁(yè)數(shù): 36/44頁(yè)
文件大?。?/td> 426K
代理商: ADSP-21266
Rev. B
|
Page 36 of 44
|
May 2005
ADSP-21266
JTAG Test Access Port and Emulation
See
Table 32
and
Figure 27
.
Table 32. JTAG Test Access Port and Emulation
Parameter
Timing Requirements
t
TCK
t
STAP
t
HTAP
t
SSYS
t
HSYS
t
TRSTW
Min
Max
Unit
TCK Period
TDI, TMS Setup Before TCK High
TDI, TMS Hold After TCK High
System Inputs Setup Before TCK High
1
System Inputs Hold After TCK High
1
TRST Pulse Width
20
5
6
7
8
4t
CK
ns
ns
ns
ns
ns
ns
Switching Characteristics
t
DTDO
t
DSYS
1
System Inputs = AD15
0, SPIDS, CLKCFG1
0, RESET, BOOTCFG1
0, MISO, MOSI, SPICLK, DAI_Px, FLAG3
0.
2
System Outputs = MISO, MOSI, SPICLK, DAI_Px, AD15
0, RD, WR, FLAG3
0, CLKOUT, EMU, ALE.
TDO Delay from TCK Low
System Outputs Delay After TCK Low
2
7
10
ns
ns
Figure 27. JTAG Test Access Port and Emulation
TCK
TMS
TDI
TDO
SYSTEM
INPUTS
SYSTEM
OUTPUTS
t
STAP
t
TCK
t
HTAP
t
DTDO
t
SSYS
t
HSYS
t
DSYS
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