S1T8825 Datasheet, PDF (6/16 Pages) Samsung semiconductor – 1.1GHZ DUAL PLL

S1T8825
CONTROL LATCH
The control register executes the following functions:
• Mode selection (H: test mode, L: normal mode)
• Charge pump’s polarity and output current selection for each channel.
• Output state selection for Lock Detector.
• Standby control of each channel and reference divider.
• ON / OFF control in filter switch.
PRELINIMARY( VER.2.1 )
1.1GHZ DUAL PLL
MSB
CH1
CH2
LSB
T
CP
CP1
CP2
SB1
CP1
CP2
SB2
SBR
LD1
LD2
SW
GC2 GC1
"0"
"0"
Group Code
Figure 2.
Bit
Name
Description
Bit 1
T
test mode
Bit 2
CP
charge
pump
output
polarity
Bit 3
CP1
channel 1
charge
pump
output
current
Bit 4
CP2
channel 1
charge
pump
output
current
Bit 5
SB1
channel 1
standby
Bit 6
CP1
channel 2
charge
pump
output
current
Bit 7
CP2
channel 2
charge
pump
output
current
Bit
Name
Description
Bit 8
SB2
channel 2
standby
Bit 9
SBR
reference
divider
standby
Bit 10
LD1
lock
detector
control 1
Bit 11
LD2
lock
detector
control 2
Bit 12
SW
filter switch
Bit 13
GC2
group code
“0”
Bit 14
GC1
group code
“0”
6