參數(shù)資料
型號(hào)： UCB1200
廠商： NXP Semiconductors N.V.
英文描述： Advanced modem/audio analog front-end
中文描述： 先進(jìn)的調(diào)制解調(diào)器/音頻模擬前端
文件頁(yè)數(shù)： 22/54頁(yè)
文件大?。?/td> 1052K
代理商： UCB1200
1998 Jul 22
22
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
UCB1200
The ADC sync mode is particularly useful when the internal ADC has to be synchronized to the external system. Typically
it is used to synchronize the read-out of the touch screen to the driving of the LCD screen, which is normally placed
beneath the touch screen. Many spikes and a lot of 'noise' are superposed on the touch screen signals, due to the close
coupling of the touch screen and the LCD.
The result of the conversion is stored in the register 11 of the SIB interface, after the completion of the conversion. An
interrupt may be generated whenever a conversion is completed (ADC_FLA_INT and/or ADC_RIS_INT bits in register
2 and 3) to ease the synchronization between the UCB1200 and the system controller. The ADC result is reset to 0x000,
whenever the ADC is started or armed till the ADC conversion is completed. ADC_DAT_VAL in the SIB register 11
indicates the status of the ADC; it equals '0' when a ADC sequence is started, which implies that the ADC result is not
valid and it equals '1' when the ADC conversion is completed and the result is stored in the SIB register 11.
Fig.17 ADC timing sequence, ADC sync mode, changing ADC input multiplexer settings.
‘SIB frame’
adc_ena (internal)
adc_start (internal)
adc_input_selection
‘a(chǎn)dc start state’
‘a(chǎn)dc state’
adc_sync
adc_dat_valid
adc_data
set adc_ena:1
set adc_start:1
set adc_start:0
read reg:11
wait for start
wait for sync
wait for start
tracking
conversion
tracking
tsibwrite
tadcena
thadcsync
tadcsam3
tadcconv
ttrckmin
tsibwrite
tsibwrite
相關(guān)PDF資料
PDF描述
UCB1200BE Advanced modem/audio analog front-end
UCB1300 Advanced modem/audio analog front-end
UCB1300BE Advanced modem/audio analog front-end
UCB1400BE Audio codec with touch screen controller and power management monitor
UCB1400 Audio codec with touch screen controller and power management monitor
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCB1200B 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:UCB1200B
UCB1200BE 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Advanced modem/audio analog front-end
UCB1300 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Advanced modem/audio analog front-end
UCB1300BE 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Advanced modem/audio analog front-end
UCB1400 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Audio codec with touch screen controller and power management monitor
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