atr2434 ATMEL Corporation, atr2434 Datasheet - Page 12

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

Table 6. Control
12
Bit
7
6
5
4
3
2
1
0
Enable
RX
7
Name
RX Enable
TX Enable
PN Code
Select
Auto Syn
Count Select
Auto PA
Disable
PA Enable
Auto Syn
Disable
Syn Enable
Addr: 0x03
ATR2434 [Preliminary]
Enable
TX
6
Description
The Receive Enable bit is used to place the IC in receive mode.
1 = Receive Enabled
0 = Receive Disabled
The Transmit Enable bit is used to place the IC in transmit mode.
1 = Transmit Enabled
0 = Transmit Disabled
The Pseudo-noise Code Select bit selects between the upper or lower half of the 64 chips/bit PN code.
1 = 32 Most Significant Bits of PN code are used
0 = 32 Least Significant Bits of PN code are used
This bit applies only when the Code Width bit is set to 32 chips/bit PN codes (Reg 0x04, bit 2 = 1).
The Auto Synthesizer Count Select bit is used to select the method of determining the settle time of the
synthesizer. The two options are a programmable settle time based on the value in the Syn Lock Count
register (Reg 0x38), in units of 2 µs, or by the auto detection of the synthesizer lock.
1 = Synthesizer settle time is based on a count in the Syn Lock Count register (Reg 0x38)
0 = Synthesizer settle time is based on the internal synthesizer lock signal
It is recommended that the Auto Syn Count Select bit is set to 1 as that guarantees a consistent settle time for
the synthesizer.
The Auto Power Amplifier Disable bit is used to determine the method of controlling the Power Amplifier. The
two options are automatically controlled by the baseband or by firmware through register writes.
1 = Register controlled PA Enable.
0 = Auto PA Enable
When this bit is set to 1 the state of the PA enable is directly controlled by bit PA Enable (Reg 0x03, bit 2). It is
recommended that this bit is set to 0 leaving the PA control to the baseband.
The PA Enable bit is used to enable or disable the Power Amplifier.
1 = Power Amplifier Enabled
0 = Power Amplifier Disabled
This bit only applies when the Auto PA Disable bit is selected (Reg 0x03, bit 3 = 1), otherwise this bit is do not
care.
The Auto Synthesizer Disable bit is used to determine the method of controlling the Synthesizer. The two
options are automatic control by the baseband or by firmware through register writes.
1 = Register controlled Synthesizer Enable
0 = Auto Synthesizer Enable
When this bit is set to 1 the state of the Synthesizer is directly controlled by bit Syn Enable (Reg 0x03, bit 0).
When this bit is set to 0 the state of the Synthesizer is controlled by the Auto Syn Count Select bit (Reg 0x03,
bit 4). It is recommended that this bit be set to 0 leaving the Synthesizer control to the baseband.
The Synthesizer Enable bit is used to enable or disable the Synthesizer.
1 = Synthesizer Enabled
0 = Synthesizer Disabled
This bit only applies when Auto Syn Disable bit is selected (Reg 0x03, bit 1 = 1), otherwise this bit is do not
care.
PN Code
Select
5
Count Select
Auto Syn
4
REG_CONTROL
Auto PA
Disable
3
PA Enable
2
Auto Syn
Disable
1
Default: 0x00
4822C–ISM–09/04
Syn Enable
0