XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 128

• Manufacturer Part Number: XC912BC32CFU8
• Description: M68HC12B Family Data Sheet
• Manufacturer: Motorola Semiconductor Products

Clock Generation Module (CGM)
10.8 Clock Divider Chains
Data Sheet
128
÷
2
4
÷
1, 2, 3, 4, 5, 6, ..., 8190, 8191
MODULUS DIVIDER:
BAUD RATE (16x)
BAUD RATE (1x)
TRANSMIT
RECEIVE
SC0BD
SCI0
SCI0
Figure
divider chains for these peripherals:
Figure 10-10. Clock Chain for SCI, BDLC, RTI, and COP
•
•
•
•
•
•
•
•
•
SCI — Serial peripheral interface
BDLC — Byte data link communications
RTI — Real-time interrupt
COP — Computer operating properly
TIM — Standard timer module
ECT — Enhanced capture timer
SPI — Serial peripheral interface
ATD — Analog-to-digital converter
BDM — Background debug mode
10-10,
BITS: R1, R0
REGISTER: BCR1
÷
2
2
÷
÷
÷
Figure
2
2
2
Clock Generation Module (CGM)
BIT: RTBYP
REGISTER: RTICTL
10-11,
0:0
0:1
1:0
1:1
BITS: RTR2, RTR1, AND RTR0
REGISTER: RTICTL
÷
TO BDLC
2
11
Figure
÷
÷
÷
÷
÷
÷
10-12, and
2
2
2
2
2
2
0:1:0
1:1:0
0:0:1
0:1:1
1:0:0
1:0:1
1:1:1
0:0:0
Figure 10-13
TO RTI
BITS: CR2, CR1, AND CR0
REGISTER: COPCTL
M68HC12B Family — Rev. 8.0
÷
÷
÷
÷
÷
÷
4
4
4
4
2
2
summarize the clock
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
0:0:0
MOTOROLA
TO COP