mpc5125 Freescale Semiconductor, Inc, mpc5125 Datasheet - Page 84

• Manufacturer Part Number: mpc5125
• Description: Mpc5125 Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

System Design Information
For a board with a COP (common on-chip processor) connector that accesses the JTAG interface and needs to reset the JTAG
module, it is not recommended to wire only TRST and PORESET.
To reset the MPC5125 via the COP connector, the HRESET pin of the COP should be connected to the HRESET pin of the
MPC5125. The circuitry shown in
sources can drive PORESET.
84
NOTES:
1
2
3
BDM Pin #
With respect to the emulator tool’s perspective:
Input is really an output from the embedded e300 core.
Output is really an input to the core.
From the board under test, power sense for chip power.
HALTED is not available from e300 core.
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
See Note
CKSTP_OUT
CKSTP_IN
See Note
HRESET
SRESET
I / O Pin
TRST
TMS
TDO
TCK
TDI
—
—
—
—
—
Figure 51
pci_frame
MPC5125 Microcontroller Data Sheet, Rev. 3
3
Table 49. COP / BDM Interface Signals
allows the COP to assert HRESET or TRST separately, while any other board
BDM Connector
ckstp_out
ckstp_in
halted
hreset
sreset
VDD
qack
GND
GND
KEY
N / C
tms
trst
tdo
tck
tdi
2
4
3
Pullup / Pulldown
Internal
Pullup
Pullup
Pullup
Pullup
Pullup
Pullup
—
—
—
—
—
—
—
—
—
—
Pullup / Pulldown
10 kΩ Pullup
10 kΩ Pullup
10 kΩ Pullup
10 kΩ Pullup
10 kΩ Pullup
10 kΩ Pullup
10 kΩ Pullup
10 kΩ Pullup
External
—
—
—
—
—
—
—
—
Freescale Semiconductor
I / O
—
—
—
—
—
O
O
O
O
O
O
O
O
I
I
I
1