Service manual

TP0332/2 3.11
Signalling generation is described in the following section.
Figure 3.8 Baseband Receive Audio Path
Figure 3.9 Baseband Transmit Audio Path
+
TXS
RXDAT
RXCLK
CD
SUB_IOCTCSS DETECT
FFSK
DETECT
SELCALL DETECT
ALERT
TONE
GENERATOR
INTERNAL SPEAKER
RXOUT2
EXTERNAL SPEAKER
RXOUT1
GC11
GC10
GC7F8F5F1GC2
RXIN
+
GC9
TX MODULATOR
LPF
FFSK
TX
SELCALL/DTMF
ALC
CTCSS
ENCODER
TX VCO
TXOUT1
GC11
GC8
LIMITER
HPF
F5
F6
GC0
ENCODER
PRE-
EMPHASIS
TXOUT2
CLK
DATA
TXS
TXDAT
INTERNAL MIC
MIC2_IN
SMART I/F AUDIO
MIC1_IN
F8 GC7