参数资料
型号: IBM25PPC750CXEFP10-3T
元件分类: 微控制器/微处理器
英文描述: RISC PROCESSOR, PBGA256
封装: 27 X 27 MM, PLASTIC, BGA-256
文件页数: 13/42页
文件大小: 492K
代理商: IBM25PPC750CXEFP10-3T
PowerPC 750CXe RISC Microprocessor Datasheet
Page 20
Version 1.0
February, 2001
Figure 7 provides the JTAG clock input timing diagram.
Table 9: JTAG AC Timing Specications (Independent of SYSCLK)
See Table 2 on page 12 for operating conditions.
Num
Characteristic
Min
Max
Unit
Notes
TCK frequency of operation
0
25
MHz
1
TCK cycle time
40
ns
2
TCK clock pulse width measured at 1.1V
15
ns
3
TCK rise and fall times
0
2
ns
4
Specification obsolete, intentionally omitted
5
TRST assert time
25
ns
1
6
Boundary-scan input data setup time
0
ns
2
7
Boundary-scan input data hold time
13
ns
2
8
TCK to output data valid
8
ns
3, 5
9
TCK to output high impedance
3
19
ns
3, 4
10
TMS, TDI data setup time
0
ns
11
TMS, TDI data hold time
15
ns
12
TCK to TDO data valid
2.5
12
ns
5
13
TCK to TDO high impedance
3
9
ns
4
14
TCK to output data invalid (output hold)
0
ns
Note:
1. TRST is an asynchronous level sensitive signal. Guaranteed by design.
2. Non-JTAG signal input timing with respect to TCK.
3. Non-JTAG signal output timing with respect to TCK.
4. Guaranteed by characterization and not tested.
5. Minimum specification guaranteed by characterization and not tested.
Figure 7. JTAG Clock Input Timing Diagram
1
2
3
VM = Midpoint Voltage (0.9V)
VM
TCK
VM
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