參數(shù)資料
型號： MPC8347ZQADFB
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 266 MHz, MICROPROCESSOR, PBGA620
封裝： 29 X 29 MM, 2.46 MM HEIGHT, 1 MM PITCH, PLASTIC, BGA-620
文件頁數(shù)： 38/98頁
文件大?。?/td> 1084K
代理商： MPC8347ZQADFB
MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 11
Freescale Semiconductor
43
JTAG
Figure 26 provides the AC test load for TDO and the boundary-scan outputs of the MPC8347EA.
Figure 26. AC Test Load for the JTAG Interface
Figure 27 provides the JTAG clock input timing diagram.
Figure 27. JTAG Clock Input Timing Diagram
Figure 28 provides the TRST timing diagram.
Figure 28. TRST Timing Diagram
JTAG external clock to output high impedance:
Boundary-scan data
TDO
tJTKLDZ
tJTKLOZ
2
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 17).
Time-of-flight delays must be added for trace lengths, vias, and connectors in the system.
2. The symbols for timing specifications 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. In general, the clock reference symbol is
based on three letters representing the clock of a particular function. 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 and characterization.
Table 41. JTAG AC Timing Specifications (Independent of CLKIN)1 (continued)
At recommended operating conditions (see Table 2).
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)
TRST
VM = Midpoint Voltage (OVDD/2)
VM
tTRST
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