參數(shù)資料
型號: ADSP-21992
廠商: Analog Devices, Inc.
英文描述: Mixed Signal DSP Controller With CAN
中文描述: 混合信號DSP控制器和CAN
文件頁數(shù): 41/49頁
文件大小: 602K
代理商: ADSP-21992
PRELIMINARY TECHNICAL DATA
This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Analog
Devices assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
41
REV. PrA
For current information contact Analog Devices at (781) 937-1799
ADSP-21992
August 2002
JTAG Test And Emulation Port Timing
Table 16
and
Figure 24
describe JTAG port operations.
Table 16. JTAG Port Timing
Parameter
Description
Min
Max
Unit
Switching Characteristics
t
DTDO
TDO Delay from TCK Low
4
ns
t
DSYS
System Outputs Delay After TCK Low
1
1
System Outputs = DATA15–0, ADDR21–0, MS3–0, RD, WR, ACK, CLKOUT, BG, PF7–0, TIMEXP, DT, DT1, TCLK, TCLK1, RCLK, RCLK1,
TFS, TFS1, RFS, RFS1, BMS.
2
System Inputs = DATA15–0, ADDR21–0, RD, WR, ACK, BR, BG, PF7–0, DR, DR1, TCLK, TCLK1, RCLK, RCLK1, TFS, TFS1, RFS, RFS1,
CLKIN, RESET.
3
50 MHz max.
0
5
ns
Timing Parameters
t
TCK
TCK Period
20
ns
t
STAP
TDI, TMS Setup Before TCK High
4
ns
t
HTAP
TDI, TMS Hold After TCK High
4
ns
t
SSYS
System Inputs Setup Before TCK Low
2
4
ns
t
HSYS
System Inputs Hold After TCK Low
2
5
ns
t
TRSTW
TRST Pulsewidth
3
4
ns
Figure 24. JTAG Port Timing
TMS
TDI
TDO
SYSTEM
INPUTS
SYSTEM
OUTPUTS
TCK
t
TCK
t
HTAP
t
STAP
t
DTDO
t
SSYS
t
HSYS
t
DSYS
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