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參數(shù)資料
| 型號(hào)： | ACE9040 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Audio Processor Advance Information |
| 中文描述： | 音頻處理器進(jìn)展信息 |
| 文件頁數(shù)： | 20/33頁 |
| 文件大?。?/td> | 335K |
| 代理商： | ACE9040 |
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20
ACE9040
CIRCUIT OPERATING MODES
ACE9040 has three operating modes: Operate, Standby
and Sleep. In Operate mode all parts of the circuit are active,
except for any explicitly powered down and the DTMF genera-
tor which only powers up when tones are generated. The pin
STBY is pulled high in Operate mode to supply V
DD
to external
audio circuits, such as a compander.
Standby Mode
Standby mode is used when the cellular terminal is
waiting for a call and is selected by an “Operation mode”
control message with bit PD at “1”. In this mode all analog
circuits, data paths, filters and their clock drivers are powered
down giving a greatly reduced supply current. In standby
mode all switch and level controls retain their previous state,
the pin STBY is not driven removing the V
supply from
external circuits. To leave Standby mode an operate com-
mand should be given by using an “Operation mode” control
message with bit PD at “0”.
Sleep Mode
Sleep mode is the same as Standby but without a clock
input. To enter sleep mode the standby command should be
given and after a delay of at least 20
μ
s the SCLK clock
stopped. To wake-up from sleep mode, the the SCLK clock
must be started and after a delay of at least 100
μ
s an operate
command given.
Power on Reset
At power up ACE9040 is put into Standby mode.
ACE9040 is set up by the controlling processor via the serial
interface using four control messages: “Operation”, “Initializ-
ing mode 0”, “Initializing mode 1” and “Handsfree”. Usually
the “Operation” control message would be sent last as it
contains the power down/up bit PD.
CELLULAR SYSTEM SELECTION
Two control bits are used to set the filter responses and
gain levels for the AMPS or TACS cellular systems. These bits
are TACS in control message “Initializing mode 1” and AMPS
in control message “Handsfree mode” and select the system
as shown in table 19.
Fig. 11 Transmit Voice Path
TRANSMIT VOICE PATH
Table 19 Cellular System Selection
Bits
System
Selected
Not valid
TACS
AMPS
Not valid
AMPS
0
0
1
1
TACS
0
1
0
1
SLO
IPS
10nF
SOFTLIMIT
0 to -30dB
LI
22/MIG
MLI
MI
MIC.AMP
MIS
SOFT
LIMIT
3 and 97%
LEVELS
DETECT
-7dB TACS
-11dB AMPS
Compressor bypass
0dB AMPS/TACS
92% LEVEL
DETECT
TEST[1:0]
GAIN
CONTROL
COMP[2:1]
0dB @ 1kHz
+6dB/octave
PRE-
EMPAHSIS
PREEMPH
+15.4dB @ 3.75V
+16dB @ 4.85V
HARD
LIMIT
-8dB
TXLPF
TEST[1:0]
DTMF
INSPENSE
TEST[0]
-2.8 to + 3.2dB
AUDEV[3:0]
AUDIODEV
VMIDTX
TXM
TLPO
DRIVER
COMPRESSOR
2dB : 1dB
COMP[2:1]
TLPO
PREIN
33nF
100nF
82nF
COUT
VMIDTX
CRCIN
CRCOUT
CIN
VMIDTX
10nF
SIDETONE
TO RECEIVE
VOICE PATH
HFGAIN
TXBF
TBPO
HF
TXC
68nF
RXC
HFS
HANDSFREE
RECTIFIER
0 to -49dB
THF[2:0]
0dB
NOM 8dB
-4 to +20.8dB
INPS[4:0]
DTMFM
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| ACE9050 | System Controller and Data Modem Advance Information |
| ACFA-450 | AM CERAMIC FILTERS |
| ACFA-455 | AM CERAMIC FILTERS |
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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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