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ADSP-21367/ADSP-21368/ADSP-21369
Rev. D
|
Page 45 of 56
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November 2008
JTAG Test Access Port and Emulation
Table 43. JTAG Test Access Port and Emulation
Parameter
Min
Max Unit
Timing Requirements
t
TCK
TCK Period
t
CK
ns
t
STAP
TDI, TMS Setup Before TCK High
5
ns
t
HTAP
TDI, TMS Hold After TCK High
6
ns
t
SSYS
1
System Inputs Setup Before TCK High
7
ns
t
HSYS
1
System Inputs Hold After TCK High
18
ns
t
TRSTW
TRST Pulse Width
4t
CK
ns
Switching Characteristics
t
DTDO
TDO Delay from TCK Low
7
ns
t
DSYS
2
System Outputs Delay After TCK Low
t
CK
÷ 2 + 7
ns
1
System Inputs = AD15–0, SPIDS, CLK_CFG1–0, RESET, BOOT_CFG1–0, MISO, MOSI, SPICLK, DAI_Px, FLAG3–0.
2
System Outputs = MISO, MOSI, SPICLK, DAI_Px, AD15–0, RD, WR, FLAG3–0, CLKOUT, EMU.
Figure 36. IEEE 1149.1 JTAG Test Access Port
TCK
TM
S
TDI
TDO
S
Y
S
TEM
INPUT
S
S
Y
S
TEM
OUTPUT
S
t
S
TAP
t
TCK
t
HTAP
t
DTDO
t
SS
Y
S
t
H
S
Y
S
t
D
S
Y
S