AK4632VN AKM [Asahi Kasei Microsystems], AK4632VN Datasheet - Page 63

• Manufacturer Part Number: AK4632VN
• Description: 16-Bit ?? Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

ASAHI KASEI
MS0396-E-00
BEEP signal output from Speaker-Amp
(Addr:07H, D6)
(Addr:00H, D2)
(Addr:00H, D4)
(Addr:02H, D5)
(Addr:02H, D6)
(Addr:02H, D7)
<Example>
PMSPK bit
BEEPS bit
ALC2S bit
PMBP bit
SPPS bit
ALC2 bit
SPP pin
SPN pin
CLOCK
The clocks can be stopped when only BEEP-Amp and Speaker-Amp are operating. However ALC2 must be
disabled.
(1) ALC2 Disable: ALC2 bit = “0”
(2) Power Up BEEP-Amp and Speaker-Amp: PMBP bit = PMSPK bit = “0” → “1”
(3) Disable the path of “ALC2
(4) Exit the power-save-mode of Speaker-Amp: SPPS bit = “0” → “1”
(5) Enter the power-save-mode of Speaker-Amp: SPPS bit = “1” → “0”
(6) Power Down BEEP-Amp and Speaker-Amp: PMBP bit = PMSPK bit = “1” → “0”
(7) Disable the path of “BEEP
Speaker-Amp output is enabled before input of BEEP-Amp becomes stable, pop noise may occur.
Enable the path of “BEEP
“(4)” time depends on the time constant of external resistor and capacitor connected to BEEP pin. If
e.g. R=20k, C=0.1µF: Recommended wait time is more than 5τ = 10ms.
0 or 1
0 or 1
Hi-Z
(1)
Hi-Z
Figure 52. “BEPP-Amp
(2)
SVDD/2
(3)
SPK-Amp”: BEEPS bit = “0” → “1”
SPK-Amp”: BEEPS bit = “1” → “0”
SPK-Amp”: ALC2S bit = “0”
Clocks can be stopped.
(4)
Normal Output
Normal Output
0
0
Speaker-Amp” Output Sequence
- 63 -
(5)
SVDD/2
Hi-Z
(6)
Hi-Z
(7)
Example:
(1) Addr:07H, Data:00H
(4) Addr:02H, Data:E0H
(2) Addr:00H, Data:70H
(3) Addr:02H, Data:60H
(6) Addr:00H, Data:40H
(5) Addr:02H, Data:60H
(7) Addr:02H, Data:00H
BEEP Signal Output
[AK4632]
2005/06