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參數(shù)資料
| 型號： | UCB1200 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Advanced modem/audio analog front-end |
| 中文描述： | 先進的調(diào)制解調(diào)器/音頻模擬前端 |
| 文件頁數(shù)： | 37/54頁 |
| 文件大?。?/td> | 1052K |
| 代理商： | UCB1200 |
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1998 Jul 22
37
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
UCB1200
CODEC DATA TRANSFER INTO THE
UCB1200
Both the audio and the telecom data is transferred within the SIB frame (bit 11-0 and bit 47-32). This data is accompanied
by two data valid flags (bit 30: audio data valid, bit 31: telecom data valid). The codec data in the SIB frames is only
processed in the UCB1200 if the appropriate data valid flag is set in the frame; the data is discarded when the data flag
equals ‘0’. Figure 32 shows the basic codec data synchronization principle used in the UCB1200.
Figure 32 shows that audio and telecom data is made available for the codec up sample filters during the 64th bit in the
SIB frame. This implies that the codec data has to be transferred in one of the SIB frames preceding the codec sample
moment.
Note: If the programmed divisor equals a multiple of 4, the codec data transfer is synchronized to the SIB frame repetition
rate (e.g. AUD_DIV[n] = 8
1 sample is needed in 2 SIB frames, AUD_DIV[n] = 12
1 sample is needed in 3 SIB
frames, etc.).
Fig.32 Codec input path data synchronization principle.
DFF
DFF
input
latch
input
latch
&
&
UPSAMPLE FILTERS
SIB INTERFACE
SIBCLK
SIBDIN
SIBSYNC
6
audio data[n]
audio_data_valid
telecom data[n]
telec_data_valid
bit64
fsa
fst
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:未知廠家 功能描述:UCB1200B |
| UCB1200BE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced modem/audio analog front-end |
| UCB1300 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced modem/audio analog front-end |
| UCB1300BE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced modem/audio analog front-end |
| UCB1400 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Audio codec with touch screen controller and power management monitor |
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