AK4953A Datasheet, PDF (91/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4953A]
■ Beep Signal Output from Speaker-Amp
BEEP Gen bits
(Addr:15-19H)
XXH
(1)
00H
PMSPK bit
(Addr:00H, D4)
PMBP bit
(Addr:00H, D5)
SPPSN bit
(Addr:02H, D7)
BPOUT bit
(Addr:19H, D7)
(2)
(3)
(4)
> 1 ms
(5)
(8)
(7)
(6)
(5)
SPP pin
Hi-Z
SVDD/2 Beep Output SVDD/2
Hi-Z
Example:default
(1) Addr:15-19H, Data:00H
(2) Addr:00H, Data:50H
(3) Addr:00H, D5 bit = “1”
(4) Addr:02H, Data:83H
(5) Addr:19H, Data:80H
BEEP Signal Output
Addr:19H, Data:00H (Auto)
(6) Addr:02H, Data:03H
SPN pin
Hi-Z SVDD/2
Beep Output SVDD/2
Hi-Z
(7) Addr:00H, D5 bit = “0”
(8) Addr:00H, Data:40H
Figure 62. “BEEP Generator → Speaker-Amp” Output Sequence
<Example>
At first, clocks must be supplied according to “Clock Set Up” sequence.
(1) Set up BEEP Generator (Addr: 15H ~ 19H) (When repeat output time BPCNT bit = “0”)
(2) Power up Speaker: PMSPK bit = “0” → “1”
(3) Power up BEEP Generator: PMBP bit = “0” → “1”
(4) Exit the power-save-mode of Speaker-Amp: SPPSN bit = “0” → “1”
(5) BEEP output: BPOUT bit= “0” → “1”
After outputting data particular set times, BPOUT bit automatically goes to “0”.
(6) Enter Speaker-Amp Power-save-mode: SPPSN bit = “1” → “0”
(7) Power down BEEP Generator: PMBP bit = “1” → “0”
(8) Power down Speaker: PMSPK bit = “1” → “0”
MS1252-E-00
- 91 -
2010/10