GMSK Packet Data Modem and RF Transceiver
CMX990
3.
Signal List
Signal
Name
PA-CNTL
TX FB
TXIF2
TXIF1
TXPLL
RF IN A
RF IN B
IF OUT
LNA ON
IF IN
DAC3
DAC2
ADC5
ADC4
OP2T
OP2N
OP2P
OP1T
OP1N
OP1P
REFCLK
TCXO-CNTL
TCXO-TEMP
LOCLKN
LOCLK
MAINPLL
AUXPLL
IFCLK
PA-TEMP
Type
O/P
I/P
BI
BI
O/P
I/P
I/P
O/P
O/P
I/P
O/P
O/P
I/P
I/P
O/P
I/P
I/P
O/P
I/P
I/P
I/P
O/P
I/P
I/P
I/P
O/P
O/P
I/P
I/P
DAC0 output to control PA power.
Tx feedback input signal.
Offset loop filter connection.
Offset loop filter connection.
Tx Phase Detector output.
RF input A for received signal.
RF input B for received signal.
Output to the external IF filter.
Digital output to turn on external LNA block.
Input from the external IF filter.
Spare D/A output.
Spare D/A output.
Spare A/D input.
Spare A/D input.
Uncommitted op-amp 2 output, internally
connected to ADC3.
Uncommitted op-amp 2 negative input.
Uncommitted op-amp 2 positive input.
Uncommitted op-amp 1 output, internally
connected to ADC2.
Uncommitted op-amp 1 negative input.
Uncommitted op-amp 1 positive input.
Master clock input from external TCXO.
DAC1 output to control TCXO.
A/D input to measure TCXO temperature,
internally connected to ADC1.
Inverted input from the RF Oscillator circuit.
Input from the RF Oscillator circuit.
Main PLL output, connect to external filter.
Aux PLL output, connect to external filter.
Input from the IF Oscillator circuit.
A/D input to measure PA temperature, internally
connected to ADC0.
Description
Package
Q1
Pin No.
1
2
3
5
7
8
9
11
14
16
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
59
61
63
64
©
2004 CML Microsystems Plc
5
D/990/1
CMLMICRO [ CML MICROCIRCUITS ]
