Data Sheet

Everestek Inc.
www.everestek.biz Page 7
5. Block Diagram and Typical Application
RF Audio Transceiver
Processor
Balun
Balun
Connector
EW21TPV typical application is a 1Tx-2Rx or 1Tx-3R em. Eernal DSP feed in ereo + boofer
 daa through two I2S-data signal. Rx can output stereo/left channel/right channel/subwoofer audio by
setting GPIO2.6 and 3.0.
If system is 1Tx-2Rx, Rx#1 will output stereo audio, Rx#2 will output subwoofer.
If system is 1Tx-3Rx, Rx#1 will output left channel audio, Rx2 will output right channel audio, Rx#3 will
output subwoofer. System function is determined by two GPIO.
The 1Tx-2Rx system architecture is shown below,
Tx
DSP
I2C
I2S
Get_CCH
CCH_OK
VCC
P3.2
P1.6
P2.6
Rx2
subwoofer
output
Rx1
Stereo
output
I2S
Get_CCH
CCH_OK
P3.2
P1.6
P3.2
P1.6
I2C
VCC
VCC
P0.3
P0.3
VCC
I2S
master/slave
ID
pairing
ID
pairing
ID
pairing
wakeup P3.1
P02
P02
P20
P0.3
P2.6
VCC
P2.6
wakeup
I2S
Get_CCH
CCH_OK
I2C
wakeup
P3.1
P3.1
P3.0
P3.0