MC145162D View Datasheet(PDF) - LANSDALE Semiconductor Inc.

Part Name

Description

Manufacturer

MC145162D

60 MHz and 85 MHz Universal Programmable Dual PLL Frequency Synthesizers CMOS

LANSDALE Semiconductor Inc. 

ML145162

LANSDALE Semiconductor, Inc.

Tx/Rx CHANNEL COUNTER TEST

In normal applications, the TxPS/fTx and the RxPS/fRx out-

put pins indicate the power saving mode status. However, the

user can examine the Tx and Rx channel counter outputs by

setting the Test bit in the control register to 1. The final value

of the transmit–channel counter and the receive–channel count-

er multiplex out to TxPS/fTx and RxPS/fRx respectively. The

user can verify the divided–down output waveform associated

with the RF input level in the PLL circuitry implementation

(Figure 18).

fin–T

TxPS / fTx

16–BIT Tx PROGRAMMABLE

CHANNELS COUNTER

fTx

TxPS

IF TEST BIT IS SET TO 1, THE fTx

AND fRx ARE MUXED OUT AT PINS

TxPS/fTx AND RxPS/fRx,

RESPECTIVELY, FOR Rx/Tx

CHANNEL COUNTER TEST.

CONTROL REGISTER IDENTIFIER = 1

Din

1

0

TEST

BIT

CONTROL REGISTER

AUX

DATA

SELECT

REF

OUT

3/ 4

TxPD

ENABLE

RxPD

ENABLE

REF PD

ENABLE

fin–R

RxPS / fRx

16–BIT Rx PROGRAMMABLE

CHANNELS COUNTER

fRx

RxPS

Figure 18. RF Buffer Sensitivity

Page 14 of 24

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