参数资料
型号: FX980L6
厂商: CML MICROSYSTEMS PLC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC44
封装: PLASTIC, LCC-44
文件页数: 50/86页
文件大小: 821K
代理商: FX980L6
TETRA Baseband Processor
FX980
1997 Consumer Microcircuits Limited
54
D/980/3
TxRampDnDec
Title:
Transmit Ramp Down Decrement registers.
Address:
$0x4E to $0x4F (mapped over 2 locations)
Function:
RW
Description:
The value in this register sets the scale of the Tx amplitude gain decrements which occur over
each sample clock period, thus determining the Tx amplitude ramp down time period. The value
is always positive. The ramp down rate, in terms of the number of symbols, is given by the
formula:
N
64
N
symbols
inc
=
Where:
N
symbols
is the ramp time in terms of number
of symbols.
Ninc
is the value in the register.
Bit
Name
Active State
Function
Address $0x4E
7:0
RampDnIncLSB
Data RW
Least significant 8 bits of the ramp down increment
register.
Address $0x4F
7:1
RW
Reserved. Set these bits Low. Undefined on read.
0
RampDnIncMSB
Data RW
Most significant bit of the ramp down increment register.
Address and Data format for TxRampDnDec access
D1 D0
D7 D6 D5 D4 D3 D2
R
D8
0
Data field [8:0]
1
Address field
[6:0]
1
0
1
0
1
0
1
0
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