CMX981 Consumer Microcircuits Limited, CMX981 Datasheet - Page 37

• Manufacturer Part Number: CMX981
• Description: Advanceddigital Radio Baseband Processor (tetra Etc.)
• Manufacturer: Consumer Microcircuits Limited

Advanced Digital Radio Baseband Processor
5.11.27 $28-$29
5.11.28 $2A-$2B
 2002 CML Microsystems Plc
The value written in this register is used to control the gain of the transmitted data. The equation
for this is:
The value of this register is in 2's complement format, allowing phase inversion.
The value written in this register controls the signal offset. The equation for this is:
The value of this register is in 2's complement format. Inappropriate values may cause arithmetic
overflow.
$28
$2A
$29
$2B
Bit
Bit
Bit
Bit
Set this bit
Set this bit
Not Used.
Not Used.
low.
low.
TxQGain
D
TxQOffset
D
7
7
7
7
out
out
= D
= D
Not Used.
Not Used.
in
in
Set this
Set this
bit low.
bit low.
* [G
+ [N
6
6
6
6
val
off
/ 2
/ 2
Not Used.
Not Used.
Set this
Set this
bit low.
bit low.
11
11
]
]
5
5
5
5
Transmit Q Channel Gain Register
where: D
Transmit Q Channel Offset Register
where: D
Transmit Q channel offset [7:0]
Transmit Q channel gain [7:0]
37
Not Used.
Not Used.
Set this
Set this
bit low.
bit low.
4
4
4
4
D
G
D
N
out
in
out
in
off
val
is the signal input, and
is the signal input, and
is the value in the register.
is the signal output,
is the value in the register.
is the signal output.
3
3
3
3
Transmit Q channel offset [11:8]
Transmit Q channel gain [11:8]
2
2
2
2
1
1
1
1
CMX981
D/981/1
0
0
0
0