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CHAPTER 13 PLL FREQUENCY SYNTHESIZER
User’s Manual U15104EJ2V0UD
13.2 Configuration of PLL Frequency Synthesizer
The PLL frequency synthesizer consists of the following hardware.
Table 13-2. Configuration of PLL Frequency Synthesizer
Item
Configuration
Data registers
PLL data register L (PLLRL)
PLL data register H (PLLRH)
PLL data register 0 (PLLR0)
Control registers
PLL mode select register (PLLMD)
PLL reference mode register (PLLRF)
PLL unlock F/F judge register (PLLUL)
PLL data transfer register (PLLNS)
Figure 13-1. Block Diagram of PLL Frequency Synthesizer
Note
External circuit
Internal bus
Internal bus
PLL mode
select register
(PLLMD)
PLL
data transfer
register (PLLNS)
PLL
NS0
PLL
MD0
PLL
MD1
PLL
RF2
PLL
RF1
PLL
RF0
PLL
UL0
PLL reference
mode register
(PLLRF)
PLL unlock
F/F judge register
(PLLUL)
PLL
RF3
2
Input select
block
Programmable
divider
Phase
comparator
( -DET)
Unlock
FF
Reference
frequency
generator
4.5 MHz
4
Charge
pump
EO1
EO0
VCOH
VCOL
Mixer
2
f
N
f
r
PLL data register
(PLLRL, PLLRH, PLLR0)
φ
Voltage
control
generator
Lowpass
filter
Note
Note
VCOL
DMD
VCOH
DMD
Содержание mPD178053
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