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PDF QX1101 Data sheet ( Hoja de datos )

Número de pieza QX1101
Descripción DVB-S Receiver IC
Fabricantes GUOXIN　
Logotipo GUOXIN Logotipo



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No Preview Available ! QX1101 Hoja de datos, Descripción, Manual

DVB-S Receiver IC
Secret Distinction:
GX1101 family
Products Specification
HANGZHOU GUOXIN SCIENCE AND TECHNOLOGY CO.,LTD
2005. 2 V1.6
To:
From:
Page:52
Version:1.6
Free Datasheet http://www.datasheet4u.net/

1 page




QX1101 pdf
CONTENTS
GX1101 family
CAUTION ............................................................................................................................................ 2
1 FUNCTION OVERVIEW.............................................................................................................8
1.1 ADC .......................................................................................................................................8
1.2 QPSK DEMODULATOR ............................................................................................................8
1.2.1 Automatic Gain Control................................................................................................8
1.2.2 Carrier Recovery...........................................................................................................8
1.2.3 Anti-alias Filter and Matched Filter ............................................................................8
1.2.4 Timing Recovery ...........................................................................................................8
1.2.5 Signal Quality Indicator................................................................................................9
1.3 FORWARD ERROR CORRECTION...............................................................................................9
1.3.1 Viterbi Decoder .............................................................................................................9
1.3.2 Synchronization ............................................................................................................9
1.3.3 Convolutional deinterleaver ........................................................................................9
1.3.4 Reed-Solomon Decoder ..............................................................................................9
1.3.5 Sync Byte Matching and Descrambling ..................................................................10
1.4 BLIND SEARCH MODE ...........................................................................................................10
1.5 TRANSPORT STREAM OUTPUT INTERFACE ............................................................................10
1.6 CONTROL ..............................................................................................................................10
1.6.1 Advanced Software Interface....................................................................................10
1.6.2 Serial 2-Wire Control Bus.......................................................................................... 11
1.6.3 2-Wire Bus Repeater.................................................................................................. 11
1.6.4 DiSEqCTM Control.......................................................................................................12
2 GX1101P INITIALIZATION......................................................................................................14
2.1 CLOCK GENERATION .............................................................................................................14
2.2 ADC CONFIGURATION ..........................................................................................................14
2.3 STANDBY MODE ....................................................................................................................15
2.4 CHIP ID .................................................................................................................................15
3 TUNER CONTROL....................................................................................................................16
3.1 SIMPLE CHANNEL CHANGE SEQUENCE .................................................................................16
3.2 CHANNEL CHANGE SEQUENCE WITH A NEW SYMBOL RATE...................................................16
3.3 BLIND SEARCH MODE ...........................................................................................................17
3.4 TUNER CONTROL REGISTERS ................................................................................................18
3.4.1 Repeater and Reset Control Register 30H.................................................................18
3.4.2 GPOP0 Control Register 31H.......................................................................................18
3.4.3 GPOP1 Control Register 32H.......................................................................................19
3.4.4 State Indicator Register 34H.........................................................................................19
3.4.5 State Indicator with Search Mode Register 35H........................................................19
4 DISEQCTM CONTROL ..............................................................................................................21
5
Addr: 5F East Software Park Innovation Building, No.99 Huaxing Road, Hangzhou P.R.China, 310012
Tel: +86-571-88156088
Fax: +86-571-88156081
http://www.nationalchip.com
Free Datasheet http://www.datasheet4u.net/

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QX1101 arduino
GX1101 family
The GX1101P has an advanced software interface (ADSI) to simplify the software design. The
ADSI maps high level inputs such as symbol rate in MBaud to low level on-chip register settings,
and as well as maps low level register settings to high level symbol rate outputs for software.
1.6.2 Serial 2-Wire Control Bus
The GX1101P is controlled via a serial 2-wire bus and is a pure slave. Its 7-bit chip address is
“110100A”, where A is determined by applying VDD or VSS to the DevAddr pin. So its 8-bit write
address is “110100A0” and its 8-bit read address is “110100A1”.
The serial 2-wire bus supports the speed up to 400kHz. Write and read operations are described
in Figure 1 and 2.
SCL
SDA
Start
Slave Address
A
A7 A6 A5 A4 A3 A2 A1 A0
D7 D6 D5 D4 D3 D2 D1 D0
R/W ACK by
GX1101P
Register Address
ACK by
GX1101P
Data Byte 1
ACK by
GX1101P
SCL
SDA D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Data Byte 2
ACK by
GX1101P
Data Byte 3
ACK by
GX1101P
Data Byte n
ACK by Stop
GX1101P
Figure 1 The 2-Wire Bus Write Operation
SCL
SDA
Start
Slave Address
A A7 A6 A5 A4 A3 A2 A1 A0
R/W ACK by
GX1101P
Register Address
ACK by
GX1101P
Stop
SCL
SDA
Start
Slave Address
A
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
R/W ACK by
GX1101P
Data Byte 1
ACK by
micro
Data Byte n
ACK by Stop
micro
Figure 2 The 2-Wire Bus Read Operation
1.6.3 2-Wire Bus Repeater
Addr: 5F East Software Park Innovation Building, No.99 Huaxing Road, Hangzhou P.R.China, 310012
Tel: +86-571-88156088
Fax: +86-571-88156081
http://www.nationalchip.com
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