Renesas M16C Series User Manual page 307

M30240 Group
Frequency Synthesizer Clock Control Register
b7 b6 b5 b4
O O O O O O O
Figure 3.2: Frequency Synthesizer Clock Control Register (FSCCR)
Frequency Synthesizer Control Register
b7 b6 b5 b4 b3
O O
Figure 3.3: Frequency Synthesizer Related Register (FSC)
Frequency Synthesizer Prescaler Register
b7 b6 b5 b4 b3
Figure 3.4: Frequency Synthesizer Prescaler Register (FSP)
Rev.1.00 Sep 24, 2003 Page 289 of 360
b3 b2 b1 b0
Symbol
FSCCR
Bit Symbol
FSCCR0
Reserved
b2 b1 b0
Symbol
FSC
Bit Symbol
Frequency Synthesizer
FSE
Enable
VCO0
VCO Gain Control
VCO1
Reserved
CHG0
LPF Current Control
CHG1
Frequency Synthesizer
LS
Lock Status
Note: Recommended
b2 b1 b0
Symbol
FSP
Bit Symbol
Frequency Synthesizer
FSP
Prescaler Value
Address
03DB
16
Bit Name
0 : Xin
Clock source selection
1 : fsyn
Must always be set to "0"
Address
03DC
16
Bit Name
0 : Disabled
1 : Enabled
Bit 2 Bit 1
0 0: Lowest Gain (Note)
0 1: Low Gain
1 0: High Gain
1 1: Highest Gain
Must always be set to "0"
Bit 6 Bit 5
0 0: Disabled
0 1: Low Current
1 0: Intermediate Current (Note)
1 1: High Current
0 : Unlocked
1 : Locked
Address
03DE
16
Bit Name
Generates f
f =f(Xin) / 2(n + 1)
PIN
n: FSP value
Frequency Synthesizer
When reset
00
16
Function R W
O O
O O
When reset
60
16
Function R W
O O
O O
O O
O O
O O
When reset
FF
16
Function R W
PIN
O O