MOTOROLA
Chapter 2. Signal Descriptions
2-13
Signal Summary
B_AN1 / B_ANx/ B_PQB1
1
I
B_AN1
Analog Channel 1. Internally multiplexed input-only analog
channel. Passed on as a separate signal to the QADC64E.
I
Multiplexed Analog Input (B_ANx). Externally multiplexed
analog input.
I/O
Port B_PQB1. This is a bidirectional general-purpose I/O if
the QADC64E is configured in enhanced mode, otherwise it
is an input only.
B_AN2 / B_ANy/ B_PQB2
1
I
B_AN2
Analog Channel 2. Internally multiplexed input-only analog
channel. The input is passed on as a separate signal to the
QADC64E.
I
Multiplexed Analog Input (B_ANy). Externally multiplexed
analog input.
I/O
Port B_PQB2. This is a bidirectional general-purpose I/O if
the QADC64E is configured in enhanced mode, otherwise it
is an input only.
B_AN3 / B_ANz / B_PQB3
1
I
B_AN3
Analog Input 3. Internally multiplexed input-only analog
channel. The input is passed on as a separate signal to the
QADC64E.
I
Multiplexed Analog Input (B_ANz). Externally multiplexed
analog input.
I/O
Port B_PQB3. This is a bidirectional general-purpose I/O if
the QADC64E is configured in enhanced mode, otherwise it
is an input only.
B_AN[48:51] / B_PQB[4:7]
4
I
B_AN[48:51]
Analog Input [48:51]. Analog input channel. The input is
passed on as a separate signal to the QADC64E.
I/O
Port B_PQB[4:7]. This is a bidirectional general-purpose I/O
if the QADC64E is configured in enhanced mode, otherwise
it is an input only.
B_AN[52:54] / B_MA[0:2] /
B_PQA[0:2]
3
I
B_AN[52:54]
Analog Input [52:54]. These inputs are passed on as
separate signals to the QADC64E.
I
Multiplexed Address [0:2] for QADC64E Module A. Provides
a three-bit multiplexed address output to the external
multiplexer chip to allow selection of one of the eight inputs.
I/O
Port B_PQA[0:2]. This is a bidirectional general-purpose I/O.
B_AN[55:59] / B_PQA[3:7]
5
I
B_AN[55:59]
Analog Input [55:59]. These inputs are passed on as
separate signals to the QADC64E.
I/O
Port B_PQA[3:7]. This is a bidirectional general-purpose I/O.
VRH
1
I
VRH
VRH. Input signal for high reference voltage for the
QADC64E_A and QADC64E_B modules.
VRL
1
I
VRL
VRL. Input signal for low reference voltage for the
QADC64E_A and QADC64E_B modules.
ALTREF
1
I
ALTREF
ALTREF. Input signal for alternate reference voltage for the
QADC64E_A and QADC64E_B modules.
VDDA
1
I
VDDA
VDDA. Power supply input to analog subsystems of the
QADC64E_A and QADC64E_B modules.
Table 2-1. MPC561/MPC563 Signal Descriptions (continued)
Signal Name
No. of
Signals
Type
Function after
Reset 1
Description