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Communication Ports
VFLS0
GND
GND
HRESET
Power
2.6 or 3.3 V
Figure 1-3. The BDM_PORT Connector pin assignment
V1, V2, V3, and V4
The V1 – V4 options provide a way to use the alternate VFLS0 and VFLS1 BDM signals from the
MPC564. By default, the primary VFLS0 and VFLS1 signals are applied by V1 and V2 default
connections. To modify the BDM port to apply the alternate VFLS0 and VFLS1 signals, options
V1 and V2 should be cut and options V3 and V4 connected.
1.4.4.2 Nexus Connector
The 2001-Nexus standard defines several different standards for different speed accesses to a
microcontroller in a target system. These standards have been revised since that release. The new
connectors come in both a robust and a non-robust configuration. In addition, each connector has
2 definitions depending upon whether the connection is an Auxiliary only (Auxiliary In and
Auxiliary Out) connection or a JTAG IEEE 1149.1 port with an Auxiliary Output port.
The MPC56x parts do not support the JTAG IEEE 1149.1 configuration.
Table 1-6. MPC56x Nexus 50-Pin Definition (Full-Port Mode)
MPC56x
Nexus Auxiliary
Signal
—
VSTBY2.6
—
HRESET
EVTI
RSTI
MSEI
1-16
1
3
5
7
9
Pin
I/O
Signal
Number
UBATT
OUT
VSTBY
OUT
TOOL_IO1
IN or
OUT
1
2
/RESET
IN
2
/EVTI
IN
2
/RSTI
IN
2
/MSEI
IN
MPC564EVB User's Manual
2
4
6
8
10
NOTE
Pin
Nexus Auxiliary
I/O
Number
1
2
OUT
3
4
IN or
OUT
5
6
IN or
OUT
7
8
OUT
9
10
—
11
12
13
14
—
SRESET
DSCK
VFLS1
DSDI
DSO
MPC56x
Signal
Signal
UBATT
—
TOOL_IO0
—
TOOL_IO2
—
VREF
VDD2.6
GND
GND
GND
GND
GND
GND
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