UMA1002 Datasheet, PDF (25/36 Pages) NXP Semiconductors – Data processor for cellular radio DPROC2

RECEIVER
SUBSYSTEM
1.2 MHz
OUTPUT
demodulated data/audio
270 pF
1.2 MHz
TXDIS
TRANSMITTER
SUBSYSTEM
CLKIN
modulation MODOUT
line
VDDD
( 3 V)
10 µF
100
nF
10 nF
RECDATA
28
10
TST
9
DEMODD
3
SDA
24
SCL
25
19
BUSY/VSAT
RXLINE
8
RXCLK
27
TXLINE
15
100 kΩ
AGND
2
TXCLK
18
2.2
VSSA
100
1
DATA PROCESSOR
UMA1002T
TXHOLD
17
µF
nF
RESET
6
VSSD
14
INVTX ₂₁
INVRX
7
n.c. ^CLKOUT 13
CLKIN
12
4
20
11
n.c.
16
22 ^TSCAN
(+3 V)
A0
23
5
DATA TXCTRL TACTRL RACTRL
DEMOD
AGND
10 nF
DATA
AUDIO PROCESSOR
+
TX
MUTE
+
RX
MUTE
VOX
I² C interface
MICROCONTROLLER
(PCB80C552)
GENERAL PURPOSE
I/O ports
VDDD
(+3 V)
MBD833
Fig.12 DPROC2 baseband application circuit (SO28, SOT136-1).