GMSK Packet Data Modem and RF Transceiver
CMX990
4.
External Components
SYNTHESISER
OP-AMP & Aux ADC interface
TCXO-TEMP
TCXO-CNTL
Vdd SYNTH
Vss SYNTH
MAINPLL
Vdd VCO
LOCLKN
REFCLK
AUXPLL
LOCLK
IFCLK
OP1N
OP2N
OP1P
OP2P
OP1T
OP2T
PA-TEMP
PA-CNTL
TX FB
Tx RF
TXIF2
Vdd Tx
TXIF1
Vss Tx
TXPLL
RF IN A
RF IN B
Vdd Rx1
IF OUT
Rx RF
Vss Rx1
Vss RX2
LNA ON
Vdd Rx2
IF IN
64
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
ADC4
ADC5
DAC2
DAC3
V-CONT
D0
D1
D2
D3
D4
D5
D6
D7
Vdd H
Host
Interface
Spare Aux
ADC & DAC
CMX990
40
39
38
37
36
35
34
33
17
A5
18
A4
19
A3
20
A2
21
A1
22
A0
23
Vdd Dig
24
Vdd Ana
25
Vbias
26
Vss Ana
27
Vss Dig
28
Vss H
29
RDN
30
WRN
31
CSN
32
IRQN
Host Interface
Host Interface
Figure 2 CMX990 Pin Overview
©
2004 CML Microsystems Plc
8
D/990/1
CMLMICRO [ CML MICROCIRCUITS ]
