參數(shù)資料
型號: TMX320DM647ZUT720
廠商: Texas Instruments, Inc.
英文描述: Digital Media Processor
中文描述: 數(shù)字媒體處理器
文件頁數(shù): 164/166頁
文件大?。?/td> 1341K
代理商: TMX320DM647ZUT720
www.ti.com
P
6.23.2 JTAG Electrical Data/Timing
TCK
TDO
TDI/TMS/TRST
1
2
3
4
2
TMS320DM647/TMS320DM648
Digital Media Processor
SPRS372–MAY 2007
Table 6-85. JTAGID Register Selection Bit Descriptions
BIT
31:28
27:12
11-1
0
NAME
VARIANT
PART NUMBER
MANUFACTURER
LSB
DESCRIPTION
Variant (4-Bit) value. DM647/DM648 value: 0000.
Part Number (16-Bit) value. DM647/DM648 value: 1011 0111 0111 1010.
Manufacturer (11-Bit) value. DM647/DM648 value: 0000 0010 111.
LSB. This bit is read as a 1 for DM647/DM648.
Table 6-86. Timing Requirements for JTAG Test Port (see
Figure 6-48
)
-720
-900
NO.
UNIT
MIN
10
MAX
1
3
4
t
c(TCK)
t
su(TDIV-TCKH)
t
h(TCKH-TDIV)
Cycle time, TCK
Setup time, TDI/TMS/TRST valid before TCK high
Hold time, TDI/TMS/TRST valid after TCK high
20
ns
ns
ns
2
0
Table 6-87. Switching Characteristics Over Recommended Operating Conditions for JTAG Test Port
(see
Figure 6-48
)
-720
-900
NO.
PARAMETER
UNIT
MIN
MAX
0.25*tc(TC
2
t
d(TCKL-TDOV)
Delay time, TCK low to TDO valid
0
ns
K)
Figure 6-48. JTAG Test-Port Timing
164
Peripheral Information and Electrical Specifications
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