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參數(shù)資料
| 型號(hào)： | AK4673EG |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP-AMP and Touch Screen Controller |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/惠普- AMP及觸摸屏控制器 |
| 文件頁數(shù)： | 75/107頁 |
| 文件大?。?/td> | 1171K |
| 代理商： | AK4673EG |
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[AK4673]
MS0670-E-00
2007/09
- 75 -
[Continuous Read mode]
This continuous read operation enables the higher sampling rate and lower processor load than a single read operation.
Because once control command is sent, it does not need to update control command on each read operation until another
control command is rewritten.
S
A/D data
N
A/D data
N
SDA
D
D
S
A
A
A
M
N
M
D
D
S
P
D
D
D
D
A/D data
N+X
N+X
A/D data
N
M
A
A
A
M
Sr
Repeat
R
Address
Address
R
R
Figure 73 Continuous A/D data Read Sequence
■
Power on Sequence
It is recommended that the control command must be sent to fix the internal register when power up. This initiates all
registers such as A2-0 bit, PD0 bit, and MODE bit. Once sending command to fix the internal register after first power up,
the state of the AK4673 is held on the known-condition of state to ensure that the AK4673 is going into desire mode to
realize lowest mode. A command with PD0= “0” should be sent so that the AK4673 will be set in the lowest power down
mode.
■
Sleep mode
The AK4673 supports the sleep mode that enables touch panel interface to put open state and disables pen interrupt
function. The AK4673 goes into the sleep mode when control command is sent to the AK4673 as shown
Table 59
. The
selection of the sleep mode is set by “MODE” bit of the control command. The state of both the output of the PENIRQN
pin and the connection with touch panel interface (XP, YP, XN, and YN) are the following
Table 59
. AK4673 keeps the
sleep mode until next control command is sent.
Command
MODE bit
0111XX1X
1
0111XX0X
0
Table 59 Sleep Command Setting
The timing of going into the sleep mode is the rising edge of the 16
th
SCL of the write operation. A/D conversion does not
execute when the sleep command is sent. The SDA pin is “H” since SDA is pull up.
In order to go to normal mode from sleep mode, the command (S= “1”) is sent. The timing of going back to normal mode
is the rising edge of the 16
th
SCL. When the sleep command is sent again under the sleep mode the mode continues the
same as before. The initial state after power up is in normal mode.
PENIRQN
Hi-z
“H” output
Touch panel
Open
Open
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相關(guān)代理商/技術(shù)參數(shù) |
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| AK4682AEQ | 功能描述:IC CODEC MULTI-CHANNEL 48LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1,000 |
| AK4682EQ | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector |
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