參數(shù)資料
型號: AK4343
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Stereo DAC with HP/RCV/SPK-AMP
中文描述: 立體聲DAC惠普/垃圾車/胰腎聯(lián)合移植腺苷
文件頁數(shù): 84/98頁
文件大小: 851K
代理商: AK4343
ASAHI KASEI
[AK4343]
MS0478-E-01
2006/10
- 84 -
CONTROL SEQUENCE
Clock Set up
When DAC is powered-up, the clocks must be supplied.
1. PLL Master Mode.
BICK pin
LRCK pin
MCKO bit
(Addr:01H, D1)
PMPLL bit
(Addr:01H, D0)
40msec(max)
Output
(1)
(6)
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
(2)
(3)
MCKI pin
(5)
(4)
Input
M/S bit
(Addr:01H, D3)
MCKO pin
Output
(8)
(7)
40msec(max)
Example:
Audio I/F Format: MSB justified
BICK frequency at Master Mode: 64fs
Input Master Clock Select at PLL Mode: 11.2896MHz
MCKO: Enable
Sampling Frequency: 44.1kHz
(1) Power Supply & PDN pin = “L”
“H”
(3)Addr:00H, Data:40H
(2)Addr:01H, Data:08H
Addr:04H, Data:4AH
Addr:05H, Data:27H
(4)Addr:01H, Data:0BH
MCKO, BICK and LRCK output
Figure 74. Clock Set Up Sequence (1)
<Example>
(1) After Power Up, PDN pin = “L”
“H”
“L” time of 150ns or more is needed to reset the AK4343.
(2) DIF1-0, PLL3-0, FS3-0, BCKO and M/S bits should be set during this period.
(3) Power UpVCOM: PMVCM bit = “0”
“1”
VCOM should first be powered-up before the other block operates.
(4) In case of using MCKO output: MCKO bit = “1”
In case of not using MCKO output: MCKO bit = “0”
(5) PLL lock time is 40ms(max) after PMPLL bit changes from “0” to “1” and MCKI is supplied from an external
source.
(6) The AK4343 starts to output the LRCK and BICK clocks after the PLL becomes stable. Then normal operation
starts.
(7) The invalid frequency is output from MCKO pin during this period if MCKO bit = “1”.
(8) The normal clock is output from MCKO pin after the PLL is locked if MCKO bit = “1”.
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