參數(shù)資料
型號: MPC755BRX450LE
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 450 MHz, RISC PROCESSOR, CBGA360
封裝: 25 X 25 MM, 3.20 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-360
文件頁數(shù): 33/52頁
文件大?。?/td> 1278K
代理商: MPC755BRX450LE
39
MPC755 RISC Microprocessor Hardware Specifications
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
System Design Information
Figure 24. JTAG Interface Connection
There is no standardized way to number the COP header shown in Figure 24; consequently, many different
pin numbers have been observed from emulator vendors. Some are numbered top-to-bottom then
left-to-right, while others use left-to-right then top-to-bottom, while still others number the pins counter
clockwise from pin 1 (as with an IC). Regardless of the numbering, the signal placement recommended in
Figure 25 is common to all known emulators.
3. Component not populated. Populate only if JTAG interface is unused.
HRESET
From Target
Board Sources
HRESET
13
SRESET
NC
11
VDD_SENSE
6
5 1
15
2 k
10 k
10 k
10 k
OVDD
CHKSTP_IN
8
TMS
TDO
TDI
TCK
TMS
TDO
TDI
TCK
9
1
3
4
TRST
7
16
2
10
12
(if any)
CO
P
H
e
a
d
e
r
14 2
Key
Notes:
1. RUN/STOP, normally found on pin 5 of the COP header, is not implemented on the MPC755.
Connect pin 5 of the COP header to OVDD with a 10 k pull-up resistor.
2. Key location; pin 14 is not physically present on the COP header.
QACK
OVDD
10 k
OVDD
2 k
3
GND
TRST
10 k
OVDD
10 k
10 k
QACK
2 k
4
QACK
CHKSTP_OUT
3
13
9
5
1
6
10
2
15
11
7
16
12
8
4
KEY
No Pin
COP Connector
Physical Pin Out
4. Component not populated. Populate only if debug tool does not drive QACK.
10 k
5
OVDD
5. Populate only if debug tool uses an open-drain type output and does not actively deassert QACK.
1
2 k
4
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