CXA2079Q Sony, CXA2079Q Datasheet
CXA2079Q
Specifications of CXA2079Q
Related parts for CXA2079Q
CXA2079Q Summary of contents
Page 1
... S2-Compatible 6-Input 2-Output Audio/Video Switch For the availability of this product, please contact the sales office. Description The CXA2079Q is a 6-input, 2-output audio/video 2 switch featuring I C bus compatibility for TVs. This IC has input pins that are compatible with S2 protocol. Features • 4 inputs that are compatible with S2 protocol 2 • ...
Page 2
... Audio system is attenuated by 6dB for 6kΩ resistor input, and a total gain is 0dB (LOUT1 and ROUT1 can be changed to –6dB). 6dB 6dB 6dB 6dB 6dB 6dB BIAS 6dB 0dB 6dB 0dB 6dB 6dB Logic – 2 – CXA2079Q 53 VOUT1 49 YIN1 56 YOUT1 55 TRAP1 58 COUT1 51 CIN1 41 VOUT2 45 ...
Page 3
... Pin Configuration 51 50 LOUT1 52 VOUT1 53 ROUT1 54 TRAP1 55 YOUT1 56 VGND 57 COUT1 58 LV5 RV5 61 LTV RTV – 3 – CXA2079Q 33 32 ADR S RV4 LV4 S-3 20 S2-3 ...
Page 4
... V CC 30k 53 27k 23.5k 41 – 4 – CXA2079Q Description Video signal inputs. Input composite video signals. Y/C separation signal inputs. Input luminance signals. The YIN1 pin inputs the signal obtained by Y/C separating the VOUT1 pin output. The YIN2 pin inputs the signal obtained by Y/C separating the VOUT2 pin output ...
Page 5
... V CC 147 72k 32 28k – 5 – CXA2079Q Description Video signal outputs. Output luminance signals. Video signal outputs. Output chrominance signals. Audio signal outputs 50Ω (within DC ± 2mA) Detects the S2-compatible DC superimposed onto the C signal. 4:3 video signal at 1.3V or less 4:3 letter-box signal at 1 ...
Page 6
... Q1 36 28k V CC 100 147 72k 48 28k 20k 147 50 20k – 6 – CXA2079Q Description bus signal input V max = 1. min = 3. bus signal input V max = 1. min = 3. max = 0.4V OL Outputs the S2-compatible DC superimposed onto the COUT2 output. The DC is superimposed by connecting this pin to the COUT2 output via a capacitor ...
Page 7
... Vcc Offset voltage between input and output When 400Hz HPF+ 30kHz LPF are inserted f=1kHz, 1Vrms input When 400Hz HPF + 30kHz LPF are inserted – 7 – CXA2079Q (Ta = 25° 9V) CC Min. Typ. Max. Unit 30 45 ...
Page 8
... HD;DAT Minimum data t SU;DAT preparation time t Rise time R t Fall time F Minimum waiting time t SU;STO for stop preparation Conditions With SDA 3mA current supplied 0.4V IL – 8 – CXA2079Q Min. Typ. Max. Unit 3.0 — 5 — 1 — 0 — 10 µA 0 — 10 µA 0 — ...
Page 9
... CC – 9 – CXA2079Q ...
Page 10
... CC – 10 – CXA2079Q ...
Page 11
... CC – 11 – CXA2079Q ...
Page 12
... CC – 12 – CXA2079Q ...
Page 13
... CC – 13 – CXA2079Q ...
Page 14
... S Description of Operation 2 The CXA2079Q bus-compatible AV switch IC. The video system and the stereo audio system both have 6 inputs and 2 outputs each the 6 video system inputs support S2 and S protocols. The desired inputs can be independently assigned to each output (in the audio system, the left and right channels are processed as one unit and audio system output 2 ...
Page 15
... Control Registers The CXA2079Q control is exercised by writing 2-byte data into the two 8-bit control registers which control the output selector circuits for the 2 outputs Slave address S: Start condition A: Acknowledge P: Stop condition Control register structure (DATA1 and DATA2) • All registers are set to "0" during IC power on. ...
Page 16
... When communication terminated in the status register reading mode, the no-acknowledge signal is needed to assure that the master does not issue the acknowledge signal to the slave possible to read only DATA1 of the status register by sending the no-acknowledge signal after DATA1. DATA1 A DATA2 DATA1 NA P – 16 – CXA2079Q NA P ...
Page 17
... However, when the S-1 to S-4 pins are open, the outputs are fixed to "3". S2-1 to S2-4 pin DC voltage 1.3V or less 1.3V or more to 2.5V or less 2.5V or more S-1 to S-4 OPEN 4) Power-on Reset The CXA2079Q has an internal power-on reset function that sets each control register to "0" during IC power ON. The power-on reset V has hysteresis. TH Power-on reset released ...
Page 18
... CC – 18 – CXA2079Q ...
Page 19
... HPF, 80kHz LPF 1 LOUT1 output (0dB gain) LOUT2 output Input amplitude [Vrms] – 19 – Audio system frequency response characteristics 2 L/RTV, L/R1 to L/R5 LOUT1 (0dB) L/RTV, L/R1 to L/R5 LOUT2 0 –2 –4 L/RTV, L/R1 to L/R5 LOUT1 (–6dB) –6 –8 1k 10k 100k Frequency [Hz CXA2079Q 1M ...
Page 20
... PACKAGE STRUCTURE PACKAGE MATERIAL QFP–64P–L01 LEAD TREATMENT LEAD MATERIAL QFP064–P–1420 PACKAGE MASS – 20 – + 0.1 0.15 – 0.05 0.15 + 0.2 0.1 – 0.05 + 0.35 2.75 – 0.15 M EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 1.5g CXA2079Q ...