s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 211

• Manufacturer Part Number: s3c72m9
• Description: The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
• Manufacturer: Samsung Semiconductor, Inc.

S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
CLOCK OUTPUT CIRCUIT
The clock output circuit, used to output clock pulses to the CLO1/CLO2 pins, has the following components:
— 4-bit clock output mode register (CLMOD1, CLMOD2)
— Clock selector
— Output latch
— Port mode flag
— CLO1 and CLO2 output pins (P2.2 and P2.3, Respectively)
CLMOD1.0
CLMOD1.1
CLMOD1.2
CLMOD1.3
NOTE: Refer to the Clock Output Mode 2 Register (CLMOD2) in chapter 4 MEMORY MAP.
fxx/16
fxx/64
clock
CPU
fxx/8
Selector
Clock
50% Duty
Duty B
Duty A
CLMOD2.3
CLMOD2.2
CLMOD2.1
CLMOD2.0
75 %
75 %
Figure 6-7. CLO1/CLO2 Output Pin Circuit Diagram
Selector B
Selector A
Duty
Duty
fxt
Selector B
Selector A
Clock
Clock
P2.3 Output latch
P2.2 Output latch
OSCILLATOR CIRCUITS
PM 2.3
PM 2.2
CLO2
CLO1
6-11