lc72136nm Sanyo Semiconductor Corporation, lc72136nm Datasheet - Page 7

• Manufacturer Part Number: lc72136nm
• Description: Pll Frequency Systhesizer
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Symbol
AOUT
BOF
BO1
BO2
BO3
BO4
BO5
IFIN
IO1
IO2
AIN
PD
are in parentheses.)
(MFP pin numbers
Pin No.
10 (11)
14 (15)
19 (20)
20 (21)
12 (13)
9 (10)
11 (12)
13 (14)
18 (19)
7 (8)
8 (9)
2 (3)
Output ports
Input or output
ports
Charge pump
output
LPF amplifier
transistor
connections
IF counter
Type
• Dedicated outputs
• The output states are determined by the BO1 to BO5
• 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 output state of the BOF pin is determined by the
• All output ports are set to the open state following a
• 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
bits in the serial data.
Data: 0 = open, 1= low
pin. (When the serial data TBC bit is set to 1.)
higher on impedance that the other output ports (pins
BO2 to BO5).
serial data DVS bit. Thus this pin can be used as an FM
band selection switch. (Note that it should not be used
as an AM band selection switch since it is susceptible to
noise from the crystal oscillator.)
DVS data: 0 = open, 1 = low
power on 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 signal 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.
LC72136N, 72136NM
high = 1 data value
Functions
Circuit configuration
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