MC9S12G Datasheet, PDF (1118/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops.

Electrical Characteristics
In Figure A-9 the timing diagram for slave mode with transmission format CPHA = 1 is depicted.
SS
(Input)
SCK
(CPOL = 0)
(Input)
SCK
(CPOL = 1)
(Input)
MISO
(Output)
MOSI
(Input)
1
2
12
3
13
4
4
12
13
9
11
8
See
Note
Slave MSB OUT
Bit MSB-1 . . . 1
Slave LSB OUT
7
5
6
MSB IN
Bit MSB-1 . . . 1
LSB IN
NOTE: Not defined
Figure A-9. SPI Slave Timing (CPHA = 1)
MC9S12G Family Reference Manual, Rev.1.01
1118
Freescale Semiconductor
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.