AMIS-53050 Datasheet, PDF (79/107 Pages) AMI SEMICONDUCTOR – Frequency Agile Transceiver

AMIS-53050 Frequency Agile Transceiver
Data Sheet
6.11 ROM 2 REGS
This command starts internal AMIS-53050 processes such as:
Multi-Channel: Calculates the frequency information to form nine channels of 300kHz bandwidth. Four of these channels are
at higher frequencies than the programmed RF frequency and four channels are at lower frequencies.
Wave Shaping: Calculates the voltage steps to form the Gaussian wave shaping of the data for the data rate selected.
Defined Data Rates: Calculates all the parameters for the selected data rate (selected from the defined data rates).
RF Frequency: Calculates the parameters needed to set the TX/RX frequency
AM Filters: Calculates parameters for the filter defined by the data rate selection (defined data rates).
6.12 Chip Reset
This resets the entire chip, similar to a POR. This operation will reset the unlock test MUX register.
6.13 ADC Conversion
Table 75: ADC Configuration
Register
Number (HEX) Name
0X00
Command
0X01
0X1B
Status/Flag1
Housekeeping
Config
Bits
010xxxxx
110xxxxx
0
4
3
Function
Perform a single ADC conversion (see Table 84)
Perform continuous ADC conversions (see Table 85)
The ADC conversion has completed
Do an ADC conversion for the internal measurements
Do an ADC conversion for the external measurements
The AMIS-53050 contains an 8 bit analog to digital converter. This ADC can measure the voltage on a number of internal functions,
such as battery voltage, temperature, received signal strength indication voltage, and loop filter voltage. The results of these
conversions are available through reading the registers where that data is stored or by using the feature of the burst transmission to
send that information to another node. The AMIS-53050 also contains two ADC channels available on the device pins. The ADC can
convert signals at a conversion rate up to 128k samples/second.
Register descriptions:
Temp- Contains the value from the last ADC of the internal temperature sensor.
Battery- Contains the value from the last ADC of the internal battery voltage (divided by 2).
RSSI- Contains the value from the last ADC of the signal level sample in the receiver.
ADC1- Contains the value from the last ADC of the external analog input.
ADC2- Contains the value from the last ADC of the external analog input.
Loop Filter- Contains the value from the last ADC of the loop filter voltage.
AMI Semiconductor – Jan. 07, M-20639-002
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