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MC145162 View Datasheet(PDF) - Motorola => Freescale

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MC145162 Datasheet PDF : 24 Pages
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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
counter multiplex out to TxPS/fTx and RxPS/fRx respectively.
The user can verify the divided–down output waveform asso-
ciated with the RF input level in the PLL circuitry implementa-
tion (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
MC145162MC145162–1
14
MOTOROLA
 

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