Philips Semiconductors
Baseband and audio interface for GSM
Objective specification
PCF50732
PIN
SYMBOL
NR. TYPE(1)
ACTIVE
LEVEL
ACTIVE
EDGE
IDD
DESCRIPTION
AUXDAC3 33 O
−
−
− auxiliary DAC output for power ramping; maximum load
50 pF, ±600 µA
VDDA(ref)
34
P
−
VSSA(ref)
35
G
−
Vref
36 I/O
−
VDDA(vb)
37
P
−
AUXMICP 38
I
−
AUXMICN 39
I
−
−
− reference voltage power supply (analog)
−
− reference voltage ground (analog)
−
− band gap reference voltage noise decoupling
−
− voice band voltage power supply
−
− auxiliary microphone differential positive input
−
− auxiliary microphone differential negative input
MICP
40
I
−
−
− microphone differential positive input
MICN
41
I
−
−
− microphone differential negative input
VSSA(vb)
42
G
−
−
− voice band ground
BUZ
43 O
−
−
− buzzer output
AUXSP 44 O
−
−
− auxiliary speaker output
EARN
45 O
−
−
− earphone differential negative output
EARP
46 O
−
−
− earphone differential positive output
VDDA(vbo)
47
P
−
−
− voice band output buffer voltage power supply (analog)
VSSA(vbo)
48
G
−
−
− voice band output buffer ground (analog)
Note
1. O/TS = 3-state output.
1999 May 03
7