RF Quadrature Transceiver / RF Quadrature Receiver
CMX991/CMX992
3
Pin List
Pin Name
(CMX991)
VCCIF
TXOUTP
Pin Name
(CMX992)
VCCIF
NC
Signal
Type
Power
O/P
NC
O/P
3
4
5
6
TXOUTN
NC
NC
TXLON
NC
NC
NC
NC
NC
NC
NC
I/P
NC
I/P
NC
I/P
I/P
I/P
I/P
Power
O/P
O/P
I/P
I/P
I/P
O/P
O/P
O/P
I/P
I/P
O/P
O/P
O/P
I/P
I/P
O/P
Power
I/P
T/S
I/P
I/P
I/P
Power
8
Package
Q3
Pin No.
1
2
Description
Supply for IF circuits
CMX991: Tx section positive output
CMX992: Do not connect to this pin, reserved for
future use
CMX991: Tx section positive output
CMX992: Do not connect to this pin, reserved for
future use
Do not connect to this pin, reserved for future
use
Do not connect to this pin, reserved for future
use
CMX991: Tx local oscillator negative input
CMX992: Do not connect to this pin, reserved for
future use
CMX991: Tx local oscillator positive input
CMX992: Do not connect to this pin, reserved for
future use
Rx mixer negative input
Rx mixer positive input
Rx mixer local oscillator negative input
Rx mixer local oscillator positive input
Supply for RF circuits
Rx mixer output 1
Rx mixer output 2
Rx IF positive input 1
Rx IF positive input 2
Rx IF negative input
Receiver Signal Level Indicator (SLI) output
RxQ negative output
RxQ positive output
RxQ amplifier positive input
RxQ amplifier negative input
Low IF output or RxQ amp output
RxI negative output
RxI positive output
RxI amplifier positive input
RxI amplifier negative input
RxI amplifier output
Digital ground
C-BUS chip select (active low), used to enable a
C-BUS data read or write operation on the chip
C-BUS serial data 3-state output (reply data) to
host
C-BUS clock input from the host
C-BUS serial data input (command data) from
the host
C-BUS reset (low for reset condition)
Supply to digital circuits
D/991_992/18
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
TXLOP
MIXINN
MIXINP
MIXLON
MIXLOP
VCCRF
MIXOUT1
MIXOUT2
IFIP1
IFIP2
IFINN
SLI
RXQN
RXQP
QAMPP
QAMPN
QAMPO
RXIN
RXIP
IAMPP
IAMPN
IAMPO
DGND
CSN
RDATA
SCLK
CDATA
RESETN
DVDD
NC
MIXINN
MIXINP
MIXLON
MIXLOP
VCCRF
MIXOUT1
MIXOUT2
IFIP1
IFIP2
IFINN
SLI
RXQN
RXQP
QAMPP
QAMPN
QAMPO
RXIN
RXIP
IAMPP
IAMPN
IAMPO
DGND
CSN
RDATA
SCLK
CDATA
RESETN
DVDD
2012 CML Microsystems Plc
CMLMICRO [ CML MICROCIRCUITS ]
