- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376196 > MSP34X1G (Electronic Theatre Controls, Inc.) Multistandard Sound Processor Family with Virtual Dolby Surround PDF資料下載
參數(shù)資料
| 型號(hào)： | MSP34X1G |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Multistandard Sound Processor Family with Virtual Dolby Surround |
| 中文描述： | 多標(biāo)準(zhǔn)聲音處理器系列與虛擬杜比環(huán)繞聲 |
| 文件頁(yè)數(shù)： | 96/104頁(yè) |
| 文件大?。?/td> | 871K |
| 代理商： | MSP34X1G |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)當(dāng)前第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)
MSP 34x1G
PRELIMINARY DATA SHEET
96
Micronas
6.4.4. NICAM Error Rate Register
Average error rate of the NICAM reception in a time
interval of 182 ms, which should be close to 0. The ini-
tial and maximum value of ERROR_RATE is 2047.
This value is also active if the NICAM bit of
MODE_REG is not set. Since the value is achieved by
filtering, a certain transition time (approx. 0.5 sec) is
unavoidable. Acceptable audio may have error rates
up to a value of 700 int. Individual evaluation of this
value by the controller and an appropriate threshold
may define the fallback mode from NICAM to FM/
AM-Mono in case of poor NICAM reception.
The bit error rate per second (BER) can be calculated
by means of the following formula:
BER = ERROR_RATE * 12.3*10
6
/s
6.4.5. PLL_CAPS Readback Register
It is possible to read out the actual setting of the
PLL_CAPS. In standard applications, this register is
not of interest for the customer.
6.4.6. AGC_GAIN Readback Register
It is possible to read out the actual setting of
AGC_GAIN in Automatic Gain Mode. In standard
applications, this register is not of interest for the cus-
tomer.
6.4.7. Automatic Search Function for FM-Carrier
Detection in Satellite Mode
The AM demodulation ability of the MSP 34x1G offers
the possibility to calculate the
“
field strength
”
of the
momentarily selected FM carrier, which can be read
out by the controller. In SAT receivers, this feature can
be used to make automatic FM carrier search possi-
ble.
For this, the MSP has to be switched to AM-mode
(MODE_REG[8]), FM-Prescale must be set to
7F
hex
=
+
127
dec
, and the FM DC notch (see section
6.5.7.)
must be switched off. The sound-IF frequency
range must now be
“
scanned
”
in the MSP-channel 2 by
means of the programmable quadrature mixer with an
appropriate incremental frequency (i.e. 10 kHz). After
each incrementation, a field strength value is available
at the quasi-peak detector output (quasi-peak detector
source must be set to FM), which must be examined
for relative maxima by the controller. This results in
either continuing search or switching the MSP back to
FM demodulation mode.
During the search process, the FIR2 must be loaded
with the coefficient set
“
AUTOSEARCH
”
, which
enables small bandwidth, resulting in appropriate field
strength characteristics. The absolute field strength
value (can be read out of
“
quasi-peak detector output
FM1
”
) also gives information on whether a main FM
carrier or a subcarrier was detected; and as a practical
consequence, the FM bandwidth (FIR1/2) and the
deemphasis (50
μ
s or adaptive) can be switched
accordingly.
Due to the fact that a constant demodulation frequency
offset of a few kHz leads to a DC level in the demodu-
lated signal, further fine tuning of the found carrier can
be achieved by evaluating the
“
DC Level Readout
FM1
”
. Therefore, the FM DC Notch must be switched
on, and the demodulator part must be switched back to
FM-demodulation mode.
For a detailed description of the automatic search
function, please refer to the corresponding MSP Win-
dows software.
ERROR_RATE
00 57
hex
Error free
0000
hex
maximum error rate
07FF
hex
PLL_CAPS
02 1F
hex
L
minimum frequency
1111 1111
FF
hex
nominal frequency
0101 0110
RESET
56
hex
maximum frequency
0000 0000
00
hex
PLL_CAPS
02 1F
hex
H
PLL open
xxxx xxx0
PLL closed
xxxx xxx1
AGC_GAIN
02 1E
hex
max. amplification
(20 dB)
0001 0100
14
hex
min. amplification
(3 dB)
0000 0000
00
hex
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSP600-3-K-5-N-1 | NEW HIGH ACCURACY, DIGITALLY COMPENSATED EMI/RFI PROTECTED STAINLESS STEEL ISOLATED PRESSURE TRANSDUCER |
| MSP600-3-K-5-N-4 | NEW HIGH ACCURACY, DIGITALLY COMPENSATED EMI/RFI PROTECTED STAINLESS STEEL ISOLATED PRESSURE TRANSDUCER |
| MSP600-3-P-3-N-1 | NEW HIGH ACCURACY, DIGITALLY COMPENSATED EMI/RFI PROTECTED STAINLESS STEEL ISOLATED PRESSURE TRANSDUCER |
| MSP600-3-P-3-N-4 | NEW HIGH ACCURACY, DIGITALLY COMPENSATED EMI/RFI PROTECTED STAINLESS STEEL ISOLATED PRESSURE TRANSDUCER |
| MSP600-3-P-4-N-1 | NEW HIGH ACCURACY, DIGITALLY COMPENSATED EMI/RFI PROTECTED STAINLESS STEEL ISOLATED PRESSURE TRANSDUCER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSP34X2G | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Multistandard Sound Processor Family with Dolby Surround Pro Logic |
| MSP34X5G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MSP 34x5G Multistandard Sound Processor Family |
| MSP34X7G | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Multistandard Sound Processor Family |
| MSP3B10000FS14E3 | 功能描述:線繞電阻器 - SMD MSP 3 B 1K 1% BA100 e3 RoHS:否 制造商:Ohmite 電阻:4.99 Ohms 容差:1 % 功率額定值:2 W 外殼代碼 - in:4023 外殼代碼 - mm:10357 溫度系數(shù):50 PPM / C 系列:RW2 工作溫度范圍:- 55 C to + 125 C 封裝:Bulk |
| MSP3B10000JS14E3 | 功能描述:線繞電阻器 - SMD MSP 3 B 1K 5% BA100 e3 RoHS:否 制造商:Ohmite 電阻:4.99 Ohms 容差:1 % 功率額定值:2 W 外殼代碼 - in:4023 外殼代碼 - mm:10357 溫度系數(shù):50 PPM / C 系列:RW2 工作溫度范圍:- 55 C to + 125 C 封裝:Bulk |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。