cef830g Hope Microelectronics co., Ltd, cef830g Datasheet - Page 85

• Manufacturer Part Number: cef830g
• Description: Rf42/43 Ism Transmitter
• Manufacturer: Hope Microelectronics co., Ltd

Register 52h. TX Ramp Control
Reset value = 00101111
Name
Type
Bit
Bit
6:4
3:2
1:0
7
Tel: [phone]
Reserved
R/
ldoramp[1:0]
txmod[2:0]
D7
txramp[1:0]
Reserved
w
Name
D6
Reserved.
TX Modulation Delay.
The time delay between PA enable and the beginning of the TX modulation to
allow for PA ramp-up. It can be set from 0 μs to 28 μs in 4 μs steps. This also
works during PA ramp down.
TX LDO Ramp Time.
The RF LDO is used to help ramp the PA to prevent VCO pulling and spectral
splatter .
00:
01: 10 μs
10: 15 μs
11: 20 μs
TX Ramp Time.
The PA is ramped up slowly to prevent VCO pulling and spectral splatter. This
register sets the time the PA is ramped up.
00:
01: 10 μs
10: 15 μs
11: 20 μs
Fax: [phone]
5 μs
5 μs
txmod[2:0]
D5
R/
w
D4
E-mail: [e-mail]
Function
D3
ldoramp[1:0]
R/
w
D2
R F 4 2 / 4 3
http://www.hoperf.com
D1
txramp[1:0]
R/
w
D0
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