參數(shù)資料
型號: AK4538VN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16Bit DS CODEC with MIC/HP/SPK-AMP
中文描述: 16位副編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 61/70頁
文件大?。?/td> 485K
代理商: AK4538VN
ASAHI KASEI
[AK4538]
MS0198-E-01
2003/5
- 61 -
2. When X'tal is used in PLL mode. (Master mode)
MCKPD bit
(Addr:01H, D7)
BICK, LRCK
(Master Mode)
PS1-0 bits
(Addr:04H, D5-4)
PMXTL bit
(Addr:01H, D6)
PMPLL bit
(Addr:01H, D5)
MCKO bit
(Addr:04H, D3)
MCKO pin
XX
00
40msec(max)
Output
Output
(1)
20ms(typ)(2)
(3)
(4)
E xam p le :
Audio I/F Format : I
2
S
B ICK frequency at M a ster Mode : 64fs
Input Master C lock S e lect at PLL Mode : 11.2896M H z
O utput M aster C lock Fre q uency : 64fs
(1) Addr:01H, Data:40H
(2) Addr:01H, Data:60H
(3) Addr:04H, Data 6AH
(4) MCKO, BICK and LRCK output starts
Figure 49. Clock Set Up Sequence(2)
<Example>
(1) Release the pull-down of the XTI pin : MCKPD bit = “1”
“0” and and power-up the X’tal oscillator: PMXTL
bit = “0”
“1”
(2) Power-up PLL : PMPLL bit = “0”
“1”
The PLL should be powered-up after the X’tal oscillator becomes stable. If X'tal and PLL are powered-up at the
same time, the PLL does not start. It takes X’tal oscillator 20ms(typ) to be stable after PMXTL bit= “1”. This
time depends on X’tal. PLL needs 40ms lock time the PMPLL bit = “0”
“1”.
(3) Enable MCKO output : MCKO bit = “0”
“1” and set up MCKO output frequency (PS1-0 bits)
(4) MCKO, BICK and LRCK are output after PLL lock time.
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