atr2434 ATMEL Corporation, atr2434 Datasheet - Page 25

• Manufacturer Part Number: atr2434
• Description: Wirelessusb 2.4-ghz Dsss Radio Soc - Atmel Corporation
• Manufacturer: ATMEL Corporation

Table 30. VCO Calibration
Table 31. AGC Control
Table 32. Carrier Detect
4822C–ISM–09/04
Carrier Detect
Bit
7:6
5:0
Bit
7
6:0
Bit
7
6:0
AGC Lock
Override
VCO Slope Enable
7
7
7
Name
Carrier Detect
Override
Reserved
Name
VCO Slope
Enable
(Write-Only)
Reserved
Name
AGC Lock
Reserved
Addr: 0x2E
Addr: 0x2F
Addr: 0x26
6
6
6
Description
The Voltage Controlled Oscillator (VCO) Slope Enable bits are used to specify the amount of variance
automatically added to the VCO.
11 = -5/+5 VCO adjust. The application MCU must configure this option during initialization
10 = -2/+3 VCO adjust
01 = Reserved
00 = No VCO adjust
These bits are undefined for read operations.
These bits are reserved and should be written with zeros.
Description
When set, this bit disables the on-chip LNA AGC system, powers down unused circuitry, and locks the LNA
to maximum gain. The user must set Reg 20, bit 6 = 1 to enable writes to Reg 0x2E. It is recommended
this bit be set during initialization to save power.
These bits are reserved and should be written with zeros.
Description
When set, this bit overrides the carrier detect. The user must set Reg 20, bit 6 = 1 to enable writes to
Reg 0x2F.
These bits are reserved and should be written with zeros.
5
5
5
REG_CARRIER_DETECT
4
4
4
REG_VCO_CAL
REG_AGC_CTL
Reserved
Reserved
3
3
3
Reserved
ATR2434 [Preliminary]
2
2
2
1
1
1
Default: 0x00
Default: 0x00
Default: 0x00
0
0
0
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