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PCF50732 Fiches technique(PDF) 22 Page - NXP Semiconductors

No de pièce PCF50732
Description  Baseband and audio interface for GSM
PDF  64 Pages
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF50732 Fiches technique(HTML) 22 Page - NXP Semiconductors

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1999 May 03
22
Philips Semiconductors
Objective specification
Baseband and audio interface for GSM
PCF50732
After conversion the corresponding bit in the AUXADC flag
register is reset (see Table 18). If RXON is activated
during an auxiliary analog-to-digital conversion cycle, the
auxiliary conversion is interrupted and restarted when
RXON returns LOW, indicating no receive burst activity.
When register AUXADC1A is read, a battery voltage
measurement during a transmission burst is executed.
The PCF50732 waits for a rising edge of TXON, and
powers up the receive path. After the settling time of the
ADC added to the programmed AUXADC conversion
delay (in 48 MCLK cycles) has elapsed, valid data is
available and stored in the AUXADC1A register.
Fig.10 Typical transfer characteristics of AUXADC (output code as function of differential input voltage).
handbook, full pagewidth
MGR996
0
1440
0.2
output code
(LSB)
offset
at 0 V
gain tolerance
0
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Vin (V)



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