XC886/888CLM
Analog-to-Digital Converter
User’s Manual
16-41
V1.3, 2010-02
ADC, V 1.0
16.7.6
Sequential Source Registers
These registers contain the control and status bits of sequential request source 0.
Register QMR0 contains bits that are used to set the sequential request source in the
desired mode.
QMR0
Queue Mode Register
(CD
H
)
Reset Value: 00
H
7
6
5
4
3
2
1
0
CEV
TREV
FLUSH
CLRV
0
ENTR
0
ENGT
w
w
w
w
r
rw
r
rw
Field
Bits
Type Description
ENGT
0
rw
Enable Gate
This bit enables the gating functionality for the
request source.
0
B
The gating line is permanently 0. The source is
switched off.
1
B
The gating line is permanently 1. The source is
switched on.
ENTR
2
rw
Enable External Trigger
This bit enables the external trigger possibility. If
enabled, bit EV is set if a rising edge is detected at
the external trigger input REQTR when at least one
V bit is set in register Q0R0 or QBUR0.
0
B
The external trigger is disabled.
1
B
The external trigger is enabled.
CLRV
4
w
Clear V Bits
0
B
No action
1
B
The bit V in register Q0R0 or QBUR0 is reset.
If QBUR0.V = 1, then QBUR0.V is reset. If
QBUR0.V = 0, then Q0R0.V is reset.
FLUSH
5
w
Flush Queue
0
B
No action
1
B
All bits V in the queue registers and bit EV are
reset. The queue contains no more valid entry.
*