CMX980AL7 CML Microcircuits, CMX980AL7 Datasheet - Page 62

• Manufacturer Part Number: CMX980AL7
• Description: TETRA Baseband Processor
• Manufacturer: CML Microcircuits

TETRA Baseband Processor
Title:
Address:
Function:
Description:
7:0
7:1
Bit
0
1999 Consumer Microcircuits Limited
1
1
RampUpIncLSB
RampUpIncMSB
TxRampUpInc
0
0
Address field
0
0
Transmit Ramp Up Increment registers.
$0x4C to $0x4D (mapped over 2 locations)
RW
The value in this register sets the scale of the Tx amplitude gain increments which occur over
each sample clock period, thus determining the Tx amplitude ramp up time period. The value is
always positive. The ramp up time, in terms of the number of symbols, is given by the formula:
Name
N
Address $0x4C
Address $0x4D
1
1
symbols
1
1
[6:0]
0
0
Data
Data
N
Active State
64
Address and Data format for TxRampUpInc access
0
1
inc
R
RW
RW
RW
Where:
R
Least significant 8 bits of the ramp up increment register.
Reserved. Set these bits Low. Undefined on read.
Most significant bit of the ramp up increment register.
R
R
N
N
62
symbols
inc
R
R
R D8
is the ramp time in terms of number
of symbols.
is the value in the register.
Function
D7 D6 D5 D4 D3 D2
Data field [8:0]
CMX980A
D1 D0
D/980A/3