lc72133m Sanyo Semiconductor Corporation, lc72133m Datasheet - Page 7

• Manufacturer Part Number: lc72133m
• Description: Pll Frequency Synthesizer For Electronic Tuning
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
V
BO1
BO2
BO3
BO4
IO1
IO2
PD
AIN
AOUT
IFIN
SS
Symbol
Pin No.
19
10
12
16
17
18
11
6
7
8
9
Ground
Output port
I/O port
Charge pump
output
LPF amplifier
transistor
IF counter
Type
• The LC72133 ground
• Dedicated output pins
• The output states are determined by BO1 to BO4 bits in
• A time base signal (8 Hz) can be output from the BO1
• Care is required when using the BO1 pin, since it has a
• The data = 0 (open) state is selected after the power-on
• I/O dual-use pins
• The direction (input or output) is determined by bits IOC1
• When specified for use as input ports:
• When specified for use as output ports:
• These pins function as input pins following a power on
• PLL charge pump output
• The n-channel MOS transistor used for the PLL active
• Accepts an input in the frequency range 0.4 to 12 MHz.
• The input signal is directly transmitted to the IF counter.
• The result is output starting the MSB of the IF counter
• Four measurement periods are supported: 4, 8, 32, and
the serial data.
Data: 0 = open, 1 = low
pin. (When the serial data TBC bit is set to 1.)
higher on impedance than the other output ports (pins
BO2 to BO4).
reset.
and IOC2 in the serial data.
Data: 0 = input port, 1 = output port
The state of the input pin is transmitted to the controller
over the DO pin.
Input state: low = 0 data value
The output states are determined by the IO1 and IO2
bits in the serial data.
Data: 0 = open, 1 = low
reset.
When the frequency generated by dividing the local
oscillator frequency by N is higher than the reference
frequency, a high level is output from the PD pin.
Similarly, when that frequency is lower, a low level is
output. The PD pin goes to the high impedance state
when the frequencies match.
low-pass filter.
using the DO pin.
64 ms.
LC72133M, 72133V
high = 1 data value
Functions
Circuit configuration
S
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A11912
A11913
A11916
A11915
A11914