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LC72122V Datasheet(PDF) 11 Page - Sanyo Semicon Device

Part # LC72122V
Description  PLL Frequency Synthesizer for Portable Equipment Electronic Tuning
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC72122V Datasheet(HTML) 11 Page - Sanyo Semicon Device

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No. 6113-11/22
LC72122V
Continued from preceding page.
DO Output Data (Serial Data Output) Structure
3. OUT mode
DO Output Data
No.
Control block/data
Description
Related data
IF counter control data
• IFIN pin input sensitivity control data. This data should be set to 1 in normal operation.
(11)
IFS
Setting this data to 0 switches the LC72122V to a reduced input sensitivity mode in which
the sensitivity is reduced by 10 to 30 mVrms.
Sub-charge pump control
• This data controls the sub-charge pump (PDS) which is provided for fast locking.
(12)
data
By setting SUBC to 1, applications can set the sub-charge pump circuit to the operating
UL0, UL1
SUBC
state and increase the speed of frequency looking.
IC test data
• IC test data
TEST 0 to TEST2
TEST0
(13)
TEST1
All three bits must be set to 0.
TEST2
All the test data is set to 0 at a power-on reset.**
(14)
DNC
Data is set to 0
No.
Control block/data
Description
Related data
I/O port data
• Data latched from the states of the I/O ports, pins IO1 and IO2.
I2, I1
• This data reflects the pin states, regardless of whether they are in input or output mode.
• The data is latched when OUT mode is selected.
I1
← IO1 pin state
High: 1
I2
← IO2 pin state
Low: 0
PLL unlock data
• Data latched from the state of the unlock detection circuit
UL
UL
← 0: Unlocked
UL
← 1: Locked or in detection stopped mode
IF counter binary data
• Data latched from the state of the IF counter, which is a 20-bit binary counter.
C19 to C0
C19
← Binary counter MSB
C0
← Binary counter LSB
(1)
(2)
(3)
IOC1,
IOC2
UL0,
UL1
CTE,
GT0,
GT1
*
Note: * Data with a value of “0”
**Note : Although the IC is initialized after power is first applied by the power on reset circuit, applications must also send a full set of data over the CCB bus
immediately after power is first applied to assure safe and stable operation.


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