參數(shù)資料
型號: AK4545
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: AC97 AUDIO CODEC WITH SRC AND DIT
中文描述: AC97聲音解碼器與SRC和DIT
文件頁數(shù): 8/33頁
文件大小: 363K
代理商: AK4545
[ASAHI KASEI] [AK4545]
MS0058-E-00
2000/11
- 8 -
n
Power On
Note that AK4545 must be in cold reset at power on and RESET# must be low until master c rystal clock becomes
stable, or reset must be done once master clock is stable.
BIT_CLK
Initialize Registers
start up crystal oscillation
SYNC=L
SDATA_OUT=L
RESET#
Vdd
T
rst2clk
n
Cold Reset Timing
Note that both SDATA_OUT and SYNC must be low at the rising edge of RESET# for cold reset.
The AK4545 initializes all registers including the Powerdown Control Registers, BIT-CLK is reactivated and each
analog output is in Hi-Z state except for PC Beep while RESET# pin is low.
The PC Beep is directly routed to L & R
line outputs when AK4545 is in Cold Reset.
At the rising edge of RESET#, the AK4545 starts the initialization of ADC and DAC, which takes 1028TS cycles.
After that, the AK4545 is ready for normal operation.
Status bit in the slot 0 is 0 (not ready) when the AK4545 is in RESET period (L) or in initialization process.
After initialization cycles, the status bit goes to 1 (ready).
BIT_CLK
V
IL
RESET#
T
rst2clk
T
rst_low
SYNC=L
SDATA_OUT=L
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