GMSK Packet Data Modem and RF Transceiver
CMX990
4.
External Components
SYNTHESISER
OP-AMP & Aux ADC interface
PA-TEMP
PA-CNTL
TX FB
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
2
TXIF2
ADC4
ADC5
DAC2
DAC3
V-CONT
D0
Tx RF
3
Vdd Tx
TXIF1
4
Spare Aux
ADC & DAC
5
Vss Tx
TXPLL
RF IN A
RF IN B
Vdd Rx1
IF OUT
Vss Rx1
Vss RX2
LNA ON
Vdd Rx2
IF IN
6
7
8
D1
CMX990
9
D2
10
11
12
13
14
15
16
D3
Host
D4
Interface
Rx RF
D5
D6
D7
Vdd H
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Host Interface
Host Interface
Figure 2 CMX990 Pin Overview
ã 2004 CML Microsystems Plc
8
D/990/1
CMLMICRO [ CML MICROCIRCUITS ]
