LC7150 datasheet(4/5 Pages) SANYO

4 / 5 page

Pin Description

Description

5.0 kHz output. When not used, connect to VSS.

4.4 kHz output (10.24 MHz

÷ 2304). When not used, connect to VSS.

VDD,VSS

Power supply.

XIN, XOUT

Crystal resonator (10.24 MHz).

D1 to D4

Channel select pin.

R/B

Base unit/remote unit select pin.

R/B = ‘‘0’’ (VSS) ...... Remote unit

R/B = ‘‘1’’ (VDD) ...... Base unit

Used to stop the TX PLL at the standby mode to minimize current dissipation.

SB = ‘‘0’’ (VSS) ...... Standby mode. Only the RX and PLL are operated. The charge pump enters a

high-impedance mode.

SB = ‘‘1’’ (VDD) ...... The TX, RX and PLL are operated.

PIT

TX programmable divider input pin.

PIR

RX programmable divider input pin.

PDT

TX charge pump output pin.

PDR

RX charge pump output pin.

TEST

LSI test input pin. Connected to VSS.

LDT

TX PLL unlock signal output pin.

When the phase difference becomes tD (= 6.25 µs.) or more, 5.6 ms. output pulse is delivered at the LDT pin.

Reference divider

Programmable divider

LDT

Reference divider

Programmable divider

LDT

LC7150

No.1634-4/5

LC7150 Datasheet(PDF) 4 Page - Sanyo Semicon Device