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AK4644 Datasheet, PDF (95/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/RCV-AMP | |||
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ASAHI KASEI
MARKING
[AK4644]
AKM
AK4644
XXXXX
1
XXXXX : Date code identifier (5 digits)
Revision History
Date (YY/MM/DD)
06/04/04
06/10/24
Revision
00
01
Reason
First Edition
Spec change
Error correct
Page Contents
36 MIC/LINE Input Selector
âWhen full-differential input is used, the signal should
not be input to the pins marked by âXâ in Table 21.â
was added.
Table 21 (Handling of MIC/Line Input Pins) was added.
55 Stereo Line Output Control Sequence
Power-down mode:
PMLO bit = â1â Ã PMLO bit = â0â
63 I2C Bus Control Mode
âthose most significant 3-bits are fixed to zerosâ
à âthose most significant 2-bits are fixed to zerosâ
73 Register Definitions (Addr=0FH)
HPM bit: âWhen the HPM bit = â1â, (L+R)/2 signals
are output to Lch and Rch of the Headphone-Amp.
Both PMHPL and PMHPR bits should be â1â when
HPM bit is â1â.
à âWhen the HPM bit = â1â, DAC output signal is
output to Lch and Rch of the Headphone-Amp as
(L+R)/2.â
86 Control Sequence (Clock Setup: Ext Slave Mode)
MCLK Frequency: 1024fs à 256fs
Addr=05H: Data=01H Ã 00H
87 Control Sequence (Clock Setup: Ext Master Mode)
MCLK Frequency: 1024fs à 256fs
Addr=05H: Data=01H Ã 00H
88 Control Sequence (Mic Recording)
ALC Setting: âRefer to Figure 23â Ã âRefer to Figure 36â
MS0477-E-01
- 95 -
2006/10
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