mpc8641 Freescale Semiconductor, Inc, mpc8641 Datasheet - Page 126

• Manufacturer Part Number: mpc8641
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

System Design Information
126
COP_CHKSTP_OUT
COP_VDD_SENSE
COP_CHKSTP_IN
Figure 69. JTAG/COP Interface Connection for Multiple MPC8641 Devices in Daisy Chain Configuration
Notes:
JTAG/COP
COP_HRESET
COP_TDO
COP_SRESET
COP_TDI
1. Populate this with a 10Ω resistor for short circuit/current-limiting protection.
2. KEY location; pin 14 is not physically present on the COP header.
3. Use a AND gate with sufficient drive strength to drive two inputs.
5. This switch is included as a precaution for BSDL testing. The switch should be open during BSDL testing to avoid
6. Although pin 12 is defined as a No-Connect, some debug tools may use pin 12 as an additional GND pin for
4. The COP port and target board should be able to independently assert HRESET and TRST to the processor in order
Header
COP_TRST
accidentally asserting the TRST line. If BSDL testing is not being performed, this switch should be closed or removed.
improved signal integrity.
COP_TMS
COP_TCK
Board Sources
to fully control the processor as shown above.
3
1
From Target
GND
2
1
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
(if any)
11
13
4
5
15
8
2
10
14
9
7
12
16
6
10kΩ
SRESET0
SRESET1
HRESET
10kΩ
NC
NC
NC
6
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
OV
DD
10Ω
5
10kΩ
3
OV
3
DD
Freescale Semiconductor
SRESET0
SRESET1
HRESET
TRST
CHKSTP_OUT
CHKSTP_IN
TMS
SRESET0
SRESET1
HRESET
TRST
CHKSTP_OUT
CHKSTP_IN
TMS
TCK
TCK
MPC8641
MPC8641
TDO
TDO
TDI
TDI
4
4
4
4