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參數(shù)資料
| 型號： | ACE9040 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Audio Processor Advance Information |
| 中文描述： | 音頻處理器進展信息 |
| 文件頁數(shù)： | 24/33頁 |
| 文件大小： | 335K |
| 代理商： | ACE9040 |
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24
ACE9040
selected by setting the SATS bit to “1” in the “Initializing
mode 1” control message. The ACE9040 connects the receive
filter RXSAT output through a Schmitt trigger to drive pin RSO
with a logic level version of the received SAT. A system
controller, such as an ACE9050, detects the frequency and
generates a digital signal to drive back into the ACE9040 on
pin TSI. After the signal level is reduced by -12 dB a 6 kHz
bandpass filter TXSAT converts this square-wave into a
sinewave. This is followed by a - 15 dB attenuator to reduce
the near logic level signal to a normal modulation level. This
signal drives the same SATDEV deviation setting stage and
mute switch SATM as the returned signal to give an output at
TSO.
Base Station Originated SAT
ACE9050, System Controller, can be used to generate a
squarewave SAT at 6 kHz which is input to pin TSI and filtered
by the TXSAT filter and output at TSO. The RXSAT filter path
with its output at RSO, can be used to filter the received SAT
from a mobile for verification by an external frequency detector
that the mobile is transponding the correct tone. This is the
same as the regeneration loop above but starting with genera-
tion.
TRANSMIT SIGNAL COMBINER
Fig. 14 Transmit Signal Combining Network and Modulation Driver
component value tolerances can be made by setting:
AUDIODEV, SATDEV and DATADEV gains, described in
more detail in the sections TRANSMIT VOICE PATH,
TRANSMIT AND RECEIVE SAT PATHS, and TRANSMIT
DATA AND DTMF PATHS. A fine adjustment is made to the
combined signal level by TXSENSE which drives the modula-
tor through pin MOD. The gain of TXSENSE is set by bits
TXSEN[3:0] in the “Initializing mode 1” control message over
the range – 2·8 to + 3·2 dB.
Used to modulate the transmitted r.f. output, the speech
and optional DTMF signals at TLPO, SAT at TSO, and data
and ST at DATO, are combined using an internal op-amp. This
op-amp has an inverting input at pin SUMI and output at pin
SUMO, the non-inverting input is internally biased to VMID.
With an external feedback resistor between SUMI and SUMO,
external resistors sum the inputs into pin SUMI and are chosen
for each different cellular system to select the relative and
absolute gains to give the correct deviation for each compo-
nent of the modulation. Individual fine adjustments to take out
AUDIO
SAT
DATA
TSO
TLPO
DATO
SUMO
SUMI
MOD
AUDIODEV
SATDEV
DATADEV
30dB
VMID
TXSENSE
-2.8 to +3.2dB
TXSEN[3:0]
+
-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ACE9050 | System Controller and Data Modem(為蜂窩式手機提供控制和邏輯接口功能的系統(tǒng)控制器和數(shù)據(jù)調(diào)制解調(diào)器) |
| ACE9050 | System Controller and Data Modem Advance Information |
| ACFA-450 | AM CERAMIC FILTERS |
| ACFA-455 | AM CERAMIC FILTERS |
| ACFA-459 | AM CERAMIC FILTERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ACE9040IGFP1N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
| ACE9040IGFP1R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
| ACE9040IGFP2N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
| ACE9040IGFP2R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit |
| ACE9040J/IW/FP1Q | 制造商:Rochester Electronics LLC 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: 制造商:ZARLINK 功能描述: |
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