MC9S12G Datasheet, PDF (572/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops.

Serial Communication Interface (S12SCIV5)
18.3.2.3 SCI Alternative Status Register 1 (SCIASR1)
Module Base + 0x0000
R
W
Reset
7
RXEDGIF
0
6
5
4
3
2
1
0
0
0
0
BERRV
BERRIF
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 18-6. SCI Alternative Status Register 1 (SCIASR1)
Read: Anytime, if AMAP = 1
Write: Anytime, if AMAP = 1
Table 18-6. SCIASR1 Field Descriptions
0
BKDIF
0
Field
Description
7
RXEDGIF
Receive Input Active Edge Interrupt Flag — RXEDGIF is asserted, if an active edge (falling if RXPOL = 0,
rising if RXPOL = 1) on the RXD input occurs. RXEDGIF bit is cleared by writing a “1” to it.
0 No active receive on the receive input has occurred
1 An active edge on the receive input has occurred
2
BERRV
Bit Error Value — BERRV reflects the state of the RXD input when the bit error detect circuitry is enabled and
a mismatch to the expected value happened. The value is only meaningful, if BERRIF = 1.
0 A low input was sampled, when a high was expected
1 A high input reassembled, when a low was expected
1
BERRIF
Bit Error Interrupt Flag — BERRIF is asserted, when the bit error detect circuitry is enabled and if the value
sampled at the RXD input does not match the transmitted value. If the BERRIE interrupt enable bit is set an
interrupt will be generated. The BERRIF bit is cleared by writing a “1” to it.
0 No mismatch detected
1 A mismatch has occurred
0
BKDIF
Break Detect Interrupt Flag — BKDIF is asserted, if the break detect circuitry is enabled and a break signal is
received. If the BKDIE interrupt enable bit is set an interrupt will be generated. The BKDIF bit is cleared by writing
a “1” to it.
0 No break signal was received
1 A break signal was received
18.3.2.4 SCI Alternative Control Register 1 (SCIACR1)
Module Base + 0x0001
R
W
Reset
7
RXEDGIE
0
6
5
4
3
2
1
0
0
0
0
0
BERRIE
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 18-7. SCI Alternative Control Register 1 (SCIACR1)
Read: Anytime, if AMAP = 1
Write: Anytime, if AMAP = 1
0
BKDIE
0
MC9S12G Family Reference Manual, Rev.1.01
572
Freescale Semiconductor
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.