參數(shù)資料
型號: MPC8545CPXAQGA
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 1000 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
文件頁數(shù): 39/142頁
文件大?。?/td> 1504K
代理商: MPC8545CPXAQGA
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
133
System Design Information
use left-to-right then top-to-bottom. Still others number the pins counter-clockwise from pin 1 (as with an
IC). Regardless of the numbering scheme, the signal placement recommended in Figure 61 is common to
all known emulators.
21.9.1
Termination of Unused Signals
If the JTAG interface and COP header will not be used, Freescale recommends the following connections:
TRST should be tied to HRESET through a 0 k
Ω isolation resistor so that it is asserted when the
system reset signal (HRESET) is asserted, ensuring that the JTAG scan chain is initialized during
the power-on reset flow. Freescale recommends that the COP header be designed into the system
as shown in Figure 62. If this is not possible, the isolation resistor will allow future access to TRST
in case a JTAG interface may need to be wired onto the system in future debug situations.
No pull-up/pull-down is required for TDI, TMS, TDO, or TCK.
Figure 61. COP Connector Physical Pinout
3
13
9
5
1
6
10
15
11
7
16
12
8
4
KEY
No pin
1
2
COP_TDO
COP_TDI
COP_RUN/STOP
NC
COP_TRST
COP_VDD_SENSE
COP_CHKSTP_IN
NC
GND
COP_TCK
COP_TMS
COP_SRESET
COP_HRESET
COP_CHKSTP_OUT
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