ak4633 AKM Semiconductor, Inc., ak4633 Datasheet - Page 68

• Manufacturer Part Number: ak4633
• Description: 16-bit ?? Mono Codec With Alc & Mic/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0447-E-03
Power Supply
PMVCM bit
(Addr:00H, D6)
(Addr:01H, D0)
PMPLL bit
MCKO pin
3. When the external clock (MCKI pin) is used in PLL Slave mode.
<Example>
MCKI pin
BICK pin
FCK pin
PDN pin
(1) After Power Up: PDN pin “ L ” → “ H ”
(2) DIF1-0, PLL3-0, FS3-0, BCKO1-0, MSBS, BCKP and M/S bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = “ 0 ” → “ 1 ”
(4) PLL Power Up: PMVCM bit “0” → “1”
(5) PLL lock time is 40ms(max) after the PMPLL bit changes from “ 0 ” to “ 1 ” and PLL reference clock (MCKI pin)
(6) The normal clock is output from MCKO after PLL is locked.
(7) The invalid frequency is output from MCKO during this period.
(8) BICK and FCK clocks should be synchronized with MCKO clock.
is supplied..
“ L ” time (1) of 150ns or more is needed to reset the AK4633.
VCOM should first be powered up before the other block operates.
(1)
(2)
(3)
(4)
(5)
40msec(max)
Figure 49. Clock Set Up Sequence (3)
(7)
Input
(6)
(8)
- 68 -
Output
Input
Example:
(1) Power Supply & PDN pin = “L”
Audio I/F Format: DSP Mode, BCKP = MSBS = “0”
MCKO : Enable
BICK frequency at Master Mode: 64fs
Input Master Clock Select at PLL Mode: 13.5MHz
Sampling Frequency:16kHz
BICK and FCK input start
(2)Addr:04H, Data:C8H
(4)Addr:01H, Data:03H
(3)Addr:00H, Data:40H
MCKO output start
Addr:05H, Data:02H
[AK4633]
“H”
2006/04