AK2303LV Datasheet, PDF (23/41 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for PBX Analog Line Card

ASAHI KASEI
MODE SETTING
[AK2303LV]
AK2303LV has a normal mode and a register off mode set by MODE pin. (pin#27)
In nomal mode, all registers are able to be accessed through the serial interface and the various functions listed
in the table of the next page can be controled via the interface.
In register off mode, all registers except volume are forced to defult value.
The register off mode eliminates the fatal abnormal condition of system caused by the crush of the internal
register value whitch may occurr due to the lightning, the strong electromagnetic field and quick power supply
change.
MODE pin status
MODE
MODE=”H” (AVDD)
Normal mode:
1.All registers can be accessed.
2. It iis highly recommended that all the register are to be
written periodically and after the abnormal circumstances
happens.
MODE=”L” (AVSS)
Register off mode:
1.Register data of address “100” and “101” are forced to defult
value. The register of adress “000” to “001” are remain to be
accessed.
2.ALAWN, MUTE1 and MUTE0 setting are valid only from pin
setting.
Attention: Please connect MODE pin to AVSS or AVDD.
2303-E-00
23
2001/09