參數(shù)資料
型號： MC8640DHX1250HE
廠商： Freescale Semiconductor
文件頁數(shù)： 80/130頁
文件大?。?/td> 0K
描述： IC DUAL CORE PROCESSOR 1023-CBGA
標準包裝： 1
系列： MPC86xx
處理器類型： 32-位 MPC86xx PowerPC
速度： 1.25GHz
電壓： 1.05V
安裝類型： 表面貼裝
封裝/外殼： 1023-BCBGA，F(xiàn)CCBGA
供應商設備封裝： 1023-FCCBGA（33x33）
包裝： 托盤
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
53
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
Symbol2
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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