參數(shù)資料
型號(hào)： AK4706VQ
廠商： ASAHI KASEI POWER DEVICES CORP
元件分類： DAC
英文描述： 2ch 24bit DAC with AV Switch & HD/SD Video Filter
中文描述： SERIAL INPUT LOADING, 24-BIT DAC, PQFP64
封裝： 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-64
文件頁(yè)數(shù)： 20/53頁(yè)
文件大小： 597K
代理商： AK4706VQ
ASAHI KASEI
[AK4706]
MS0507-E-00
2006/05
- 20 -
OPERATION OVERVIEW
1. System Reset and Power-down options
The AK4706 should be reset once by bringing PDN pin = “L” upon power-up. The AK4706 has several operation modes.
The PDN pin, AUTO bit, DAPD bit, MUTE bit and STBY bit control operation modes as shown in Table 1 and Table 2.
PDN
pin
bit
bit
bit
0
“L”
*
*
*
Mode
AUTO
STBY
MUTE
DAPD
bit
*
Mode
Full Power-down
Auto Startup mode
(default)
Standby & mute
Standby
Mute
(DAC power down)
Mute
(DAC operation)
Normal operation
(DAC power down & Analog input)
Normal operation
(DAC operation)
1
“H”
1
*
*
*
2
3
“H”
“H”
0
0
1
1
1
0
*
*
4
“H”
0
0
1
1
5
“H”
0
0
1
0
6
“H”
0
0
0
1
7
“H”
0
0
0
0
*: Don’t Care
Table 1. Operation Mode Settings
Audio
MCLK,
BICK,
LRCK
Not
needed
Video Output
Mode
Register
Control
DAC
Audio Bias
Level
Video
Signal
TVFB,
TVSB
VCRSB
0
Full Power-down
NOT
available
Power
down
Power
down
Hi-Z
Hi-Z
Pull-down
(2)
1
Auto Startup mode
No video input
Auto Startup mode
Video input (3)
Available
Active
Active
(4)
Hi-Z/
Active
Active
Active
2
Standby & mute
Power
down
Active
Power
down
Active
(1)
3
4
5
Standby
Mute1
Mute2
Active
Needed
6
Normal operation
(DAC power down
& Analog input)
Normal operation
(DAC operation)
Power
down
Not
needed
7
Active
Needed
Notes:
(1) TVOUTL/R are muted by VMUTE bit in the default state.
(2) Internally pulled down by 120kohm(typ) resistor.
(3) Video input to TVVIN or VCRVIN.
(4) VCRC outputs 0V for termination.
HD Video output does not work. (Hi-Z default)
Table 2. Status of each operation modes
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