LC72147V Ver la hoja de datos (PDF) - SANYO -> Panasonic
Número de pieza
componentes Descripción
Fabricante
LC72147V Datasheet PDF : 22 Pages
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Pin Functions
Pin No. Symbol
1
XIN
24
XOUT
Usage
X’tal OSC
LC72147V
Function
• Crystal oscillator connection.
(4.5, 7.2, 10.25, or 10.35 MHz)
• FMIN is selected by setting DVS in the control data to 1.
• Input frequency: 10 to 180 MHz
12
FMIN
Local oscillator signal input
• The signal is transmitted to the swallow counter.
• The divisor can be set to a value in the range 272 to 65,535.
23
CE
21
CL
22
DI
Chip enable
Clock
Input data
• This pin must be set to the high level when inputting serial data to the
LC72147V DI pin and when outputting serial data from the DO pin.
• Data synchronization clock signal used when inputting serial data to
the LC72147V DI pin and when outputting serial data from the DO pin.
• Serial data input for transferring data from the controller to the
LC72147V.
20
DO
Output data
• Serial data output for transferring data from the LC72147V to the
controller.
4
VDD
5
Vreg
6
VSS
Power
Regulator output
Ground
• LC72147V power supply. A voltage in the range 4.5 to 6.5 V must be
provided when the PLL circuit is operating.
• The power-on reset circuit operates when power is first applied.
• Regulator output. A capacitor must be inserted between Vreg and
VSS.
• The output voltage (3.0 V ±10%) is supplied to internal circuits.
• LC72147V ground.
Pin circuit
S
S
S
———
———
———
14
IFBC
IF buffer control
• The LC72147V can control the LA1783/1750 IF buffer output.
• This is a 3-state output. (0 V, Vreg/2 = 1.5 V, and Vreg = 3 V)
• General-purpose I/O ports.
16
I/O-1
• The outputs are open-drain circuits.
17
I/O-2
General-purpose I/O ports • After the power-on reset, I/O-1 and I/O-2 function as input ports. I/O-
3 functions as an output port fixed at the low level.
2
I/O-3
• The input/output state of these ports can be set using the I/O-1 to
I/O-3 bits in the serial data sent from the controller.
Continued on next page.
No. 6675-5/22
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