mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 282

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Multiple Serial Interface
SP0CR2 — SPI Control Register 2
Technical Data
282
RESET:
Bit 7
0
0
1. The serial pin control 0 bit enables bidirectional configurations.
2. Slave output is enabled if DDS4 = 1, SS = 0 and MSTR = 0. (#1, #3)
3. Master output is enabled if DDS5 = 1 and MSTR = 1. (#2, #4)
4. SCK output is enabled if DDS6 = 1 and MSTR = 1. (#2, #4)
5. SS output is enabled if DDS7 = 1, SSOE = 1 and MSTR = 1. (#2, #4)
#1
#2
#3
#4
Pin Mode
Bidirectional
6
0
0
Read or write anytime.
SPSWAI — Serial Interface Stop in WAIT mode
SPC0 — Serial Pin Control 0
Normal
Normally data is transferred most significant bit first.This bit does not
affect the position of the MSB and LSB in the data register. Reads and
writes of the data register will always have MSB in bit 7.
This bit decides serial pin configurations with MSTR control bit.
0 = Serial interface clock operates normally
1 = Halt serial interface clock generation in WAIT mode
5
0
0
SPC0
Multiple Serial Interface
0
1
(1)
4
0
0
MSTR
0
1
0
1
3
0
0
Slave Out
Master In Master Out
Slave I/O
MISO
GPI/O
(2)
2
0
0
Master I/O
MOSI
Slave In
GPI/O
SPSWAI
MC68HC912D60A — Rev. 3.1
(3)
1
0
Freescale Semiconductor
SCK Out
SCK Out
SCK In
SCK In
SCK
SPC0
Bit 0
0
(4)
SS I/O
SS I/O
SS In
SS In
SS
$00D1
(5)