Kirisun DP480 - Port Description of AT1846 S

DP480 Service Manual
10
⚫ Digital AGC
⚫ Modulation and demodulation technique based on digital signal processing technology
d. TX path of direct frequency synthesis
⚫ Modulation method of direct frequency synthesis
⚫ TX filter based on digital signal processing technology
⚫ TX modulation gain number is adjustable
⚫ Digital voice activates TX control
e. High-performance fractional PLL frequency synthesizer
⚫ Fully-integrated in-chip RF VCO
⚫ Fully-integrated internal loop filter
⚫ Low phase noise
⚫ Fast lock of phase
⚫ High-frequency resolution with random frequency adjustable
⚫ Built-in transistor frequency error calibration circuit
f. Sleep mode of ultra-low loss
g. Three wire serial digital interface control
4.7.2.Port Description of AT1846S
AVDD
1
Power supply
SCLK
2
Clock input for serial control bus
SDIO
3
Data input/output for serial control bus
AVDD
4
Power supply
XTAL1
5
Oscillator pin 1
XTAL2
6
Oscillator pin 2,control interface select
MODE
7
When MODE = VL, I2C Interface is select; When MODE = VH, SPI Interface is
select
SENB
8
Latch enable (active low) input for serial control bus
AFOUT
9
Audio signal output to speaker
NC*
10
No connection