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參數(shù)資料
| 型號： | AK4650 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| 中文描述： | 16位ツヒ編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁數(shù)： | 52/86頁 |
| 文件大?。?/td> | 824K |
| 代理商： | AK4650 |
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[AK4650]
MS0502-E-01
2007/04
- 52 -
4. Wake Up Time
The AK4650 can measures the touch screen position by 12bit ADC at arround 50ms from power-down state.
(1) Wake Up from PR4 bit = “1” and PR5 bit = “1”
The time from pen touch to position measurement available dependes on CPU, X’tal oscillator and the driver in addition
to the AK4650. T5 and T7 depend on the AK4650. T7 is less than 1μs. T5 (X’tal oscillation stable and BITCLK is output)
is 20ms.
T1 : From pen touch to SDATAIN output => depends on touch screen
T2 : The AK4650 outputs SDATAIN and CPU outputs SYNC => depends on CPU
T3 : SYNC “H” time => depends on CPU, more than 1μs
T4 : From SYNC falling edge to X’tal oscillation start => depends on CPU
T5 : X’tal oscillation stable and BITCLK is output => depends on X’tal
T6 : From CPU receives BITCLK to CPU outputs SYNC => depends on CPU
T7 : From the AK4650 receives SYNC to the AK4650 outputs CODEC Ready => 162.8ns
T8 : From CPU receives CODEC Ready to CPU reads ADC data => depends on CPU
TS C Touc h
IN T N
S D A TA IN
S Y NC
Cry s tal O c ilator
12bit A D C
B ITC LK
T 2
T 3
T 4
T 5
T 6
T 7
T 8
T 1
Figure 40. AC-Link Wake Up Timing (PR5 bit = “1”)
5. Pen Interrupt
The AK4650 outputs pen interrupt signal when pen interrupt is enabled and pen touch is detected.
(1)
When PENINT bit is “1”, INTN pin goes to “L”
(2)
When AC-Link operates, GINT bit is “1” and SLOT bit is “1”, bit 0 of slot 12 on SDATAIN goes to “1”.
(3)
When PINTR bit is “1”, DTPEN bit (Addr=6AH: D2) output the pen touch detection result.
GPIO pin of the controller is not needed in case of (2) or (3).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4650VG | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| AK4651 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4651VG | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4665A | 20-Bit Stereo CODEC with MIC/HP-AMP |
| AK4665AEN | 20-Bit Stereo CODEC with MIC/HP-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4650VG | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| AK4651 | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4651VG | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4664VQ | 功能描述:IC CODEC STEREO 20BIT LQFP 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 |
| AK4665A | 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP |
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