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參數(shù)資料
| 型號： | MC8641HX1250HE |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023 |
| 封裝： | 33 X 33 MM, CERAMIC, BGA-1023 |
| 文件頁數(shù)： | 82/130頁 |
| 文件大?。?/td> | 1493K |
| 代理商： | MC8641HX1250HE |
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MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
55
JTAG
Figure 32 provides the AC test load for TDO and the boundary-scan outputs.
Figure 32. AC Test Load for the JTAG Interface
Figure 33 provides the JTAG clock input timing diagram.
Figure 33. JTAG Clock Input Timing Diagram
Output hold times:
Boundary-scan data
TDO
tJTKLDX
tJTKLOX
30
—
ns
5, 6
JTAG external clock to output high impedance:
Boundary-scan data
TDO
tJTKLDZ
tJTKLOZ
3
19
9
ns
5, 6
Notes:
1. All outputs are measured from the midpoint voltage of the falling/rising edge of tTCLK to the midpoint of the signal in question.
The output timings are measured at the pins. All output timings assume a purely resistive 50-
Ω load (see Figure 32).
Time-of-flight delays must be added for trace lengths, vias, and connectors in the system.
2. The symbols used for timing specifications herein follow the pattern of t(first two letters of functional block)(signal)(state) (reference)(state)
for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tJTDVKH symbolizes JTAG
device timing (JT) with respect to the time data input signals (D) reaching the valid state (V) relative to the tJTG clock reference
(K) going to the high (H) state or setup time. Also, tJTDXKH symbolizes JTAG timing (JT) with respect to the time data input
signals (D) went invalid (X) relative to the tJTG clock reference (K) going to the high (H) state. Note that, in general, the clock
reference symbol representation is based on three letters representing the clock of a particular functional. For rise and fall
times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
3. TRST is an asynchronous level sensitive signal. The setup time is for test purposes only.
4. Non-JTAG signal input timing with respect to tTCLK.
5. Non-JTAG signal output timing with respect to tTCLK.
6. Guaranteed by design.
Table 44. JTAG AC Timing Specifications (Independent of SYSCLK) 1 (continued)
At recommended operating conditions (see Table 3).
Parameter
Symbol 2
Min
Max
Unit
Notes
Output
Z0 = 50 Ω
OVDD/2
RL = 50 Ω
JTAG
tJTKHKL
tJTGR
External Clock
VM
tJTG
tJTGF
VM = Midpoint Voltage (OVDD/2)
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相關代理商/技術參數(shù) |
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| MC8641HX1250J | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
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| MC8641HX1250N | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
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