參數(shù)資料
型號: MPC8543EPXANGB
廠商: Freescale Semiconductor
文件頁數(shù): 102/151頁
文件大小: 0K
描述: MPU POWERQUICC III 783-PBGA
標準包裝: 1
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 800MHz
電壓: 1.1V
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應商設備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 9
54
Freescale Semiconductor
JTAG
Figure 29 provides the AC test load for TDO and the boundary-scan outputs.
Figure 29. AC Test Load for the JTAG Interface
Figure 30 provides the JTAG clock input timing diagram.
Figure 30. JTAG Clock Input Timing Diagram
Valid times:
Boundary-scan data
TDO
tJTKLDV
tJTKLOV
4
2
20
10
ns
5
Output hold times:
Boundary-scan data
TDO
tJTKLDX
tJTKLOX
30
ns
5
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-
load (see Figure 29).
Time-of-flight delays must be added for trace lengths, vias, and connectors in the system.
2. The symbols used 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. 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)
Parameter
Symbol2
Min
Max
Unit
Notes
Output
Z0 = 50
OVDD/2
RL = 50
JTAG
tJTKHKL
tJTGR
External Clock
VM
tJTG
tJTGF
VM = Midpoint Voltage (OVDD/2)
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