AS3668 datasheet(47/60 Pages) AMSCO

47 / 60 page

Charge Pump

00h

Reg Control

cp_on

0: Charge Pump off

1: Charge Pump on

23h

CP Control

cp_auto_on

0: Manual CP Mode

1: automatic CP Mode

cp_start_debounce

0: 32ms debounce time

1: 240 s debounce time

cp_mode_switching

0: Automatic Mode

1: Manual Mode

cp_mode

0: 1:1 mode

1: 1:2 mode

cp_clk

0: 1MHz

1: 500kHz

Overtemperature Control

29h

Overtemp

Control

vmon_vbat<6:5>

0: ~2V - Shutdown Mode 01: 3.0V - Standby Mode

10: 3.15V - Standby Mode 11: 3.3V - Standby Mode

shutdown_enable

0: disable shutdown

1: enable shutdown

rst_ov_temp

ov_temp

ov_temp_on

0: temp supervision off

1: temp supervision on

Audio Control

40h

Audio AGC

agc_up_level

0: Normal AGC up

switching level threshold

1: AGC up switching

threshold increased

agc_down_level

0: Normal AGC down

switching level threshold

1: AGC down switching

threshold increased

decay_agc_down<4:3>

00: 0.131s 01: 0.262s

10: 0.393s 11: 0.524s

decay_agc_up<2:1>

00: 0.262s 01: 0.524s

10: 0.786s 11: 1.049s

agc_on

0: AGC switched off

1: AGC switched on

41h

Audio Input

Buffer

audio_dis_start

0: input cap precharge

1: no precharging

audio_man_start

0: auto precharge

1: manual precharge

audio_gain<5:1>

Controls the audio input gain from -6dB ... +25dB in 1dB steps

aud_buf_on

0: Audio Buffer off

1: Audio Buffer on

42h

Audio Control

audio_input_pin

0: GPIO

1: CURR4

pld_off

0: Pull down enabled

1: Pull down disabled

adc_characteristic

0: x*250mV (linear)

1: x*50mV (linear)

0: 75mV*2

(log)

1: 75mV*2

(log)

audio_decay<4:3>

00: 10ms 01: 20ms

10: 40ms 11: 80ms

audiosync_mode<2:0>

000: 4 LED bar code 001: 4 LED bar code with dimming

010: running LED bar code 011: running LED bar code with dimming 100: RGB

101: RGB with dimming 110: 4 LED parallel with dimming 111: -

43h

Audio Output

curr4_aud_en

0: CURR4 normal mode

1: CURR4 audio sync

curr3_aud_en

0: CURR3 normal mode

1: CURR3 audio sync

curr2_aud_en

0: CURR2 normal mode

1: CURR2 audio sync

curr1_aud_en

0: CURR1 normal

mode

1: CURR1 audio sync

Table 44. I2C Register Overview

Addr

Name

AS3668 Datasheet(PDF) 47 Page - ams AG

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