MITSUMI I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF I2C BUS Controlled 5-Input 2-Output AV Switch Monolithic IC MM1492AF Outline This IC is a 5-input 2-output AV switch controlled by the I2C BUS developed for use in television. Because there are 2 outputs, it supports 2 screens and P-IN-P, and also supports an external output (monitor) pin. Features (1) Serial control by I2C BUS (2) 5 inputs, 2 outputs (3) 1 Y/C (S pin) inputs, 2 outputs (4) The video and audio switches can be controlled independently (5) Built-in 6dB amp for video (6) Built-in Y/C (S pin) mix circuit (7) One of the two audio outputs has a built-in -6dB ON/OFF switch (8) Slave address can be changed. 90H and 92H possible. (9) Audio muting from external pin possible (10) Maintains high impedance even when I2C BUS line (SDA, SCL) power supply is off. (11) Built-in 3 value discrimination function built-in (12) Built-in power ON reset function (13) Supports 2 screens and P-IN-P. Also supports external output (monitor) pin. Package SOP-44B Applications (1) TV (2) Other video equipment MITSUMI Block Diagram I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Pin Assignment 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 SOP-44B 1 2 3 4 5 6 7 8 9 10 11 V1-V V1-L V1-Y V1-R V1-C S1 V2-V V2-L V2-Y V2-R V2-C S2 V3-V V3-L V3-R STV-V STV-L STV-R YIN2 ADR CIN2 GND 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 VOUT2 ROUT2 COUT2 LOUT2 YOUT2 GND SDA SCL MUTE CIN1 GND 34 35 36 37 38 39 40 41 42 43 44 YIN1 ROUT1 LOUT1 VOUT1 BIAS YOUT1 VCC COUT1 MTV-R MTV-V MTV-L Pin Description Pin No. Pin name Functions 1 V1-V Video input terminal 3 V1-Y (Composite or Y) 7 V2-V *Sync chip clamp 9 V2-Y 13 V3-V 16 STV-V 19 YIN2 34 YIN1 43 MTV-V 2 V1-L 4 V1-R 8 V2-L 10 V2-R 14 V3-L 15 V3-R 17 STV-L 18 STV-R 42 MTV-R 44 MTV-L Audio input terminal Internal equivalet circuit diagram I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Pin No. Pin name Functions 5 V1-C Video input terminal 11 V2-C (Croma) 21 CIN2 32 CIN1 6 S1 Distinction 3-effects input terminal 12 S2 DC Detect 20 ADR Sleve address select 31 Mute Audio Mute terminal 22 GND GND 23 VOUT2 Composite video out 37 VOUT1 24 ROUT2 26 LOUT2 35 ROUT1 36 LOUT1 25 COUT2 27 YOUT2 39 YOUT1 41 COUT1 28 33 Audio out terminal S -Video out terminal Internal equivalet circuit diagram I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Pin No. Pin name Functions Internal equivalet circuit diagram 2 29 SDA Data input from I C 30 SCL CLK input from I2C 38 BIAS Internal bias terminal 40 VCC VCC Absolute Maximum Ratings (Ta=25°C) Item Symbol Ratings Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply voltage VCCmax. 12 V Allowable loss Pd 1100 mW Recommended Operating Conditions Item Symbol Ratings Units Operating temperature TOPR -20~+75 °C Operating voltage VOP +8~+10 V I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Electrical Characteristics Item Current consumption VOUT1 Voltage gain Frequency characteristics Differential gain Differential phase Input dynamic ranges VOUT2 Voltage gain Frequency characteristics Differential gain Differential phase Input dynamic range YOUT1 Voltage gain Frequency characteristics (Except where noted otherwise, VCC=9V, Ta=25°C) Symbol ICC Measurement conditions No signal GV1 fV1 DGV1 DPV1 DV1 SIN wave : 1VP-P 100kHz SIN wave : 1VP-P 10MHz/100kHz Staircase signal 1VP-P Staircase signal 1VP-P SIN wave : 100kHz THD=1.0% 5.5 -1.0 -3 -3 1.4 6.0 0.0 0 0 1.5 6.5 1.0 3 3 dB dB % deg VP-P GV2 fV2 DGV2 DPV2 DV2 SIN wave : 1VP-P 100kHz SIN wave : 1VP-P 10MHz/100kHz Staircase signal 1VP-P Staircase signal 1VP-P SIN wave : 100kHz THD=1.0% 5.5 -1.0 -3 -3 1.4 6.0 0.0 0 0 1.5 6.5 1.0 3 3 dB dB % deg VP-P GY1 GY2 fY1 fY2 Vn-Y : SIN wave 1VP-P 100kHz YIN1 : SIN wave 2VP-P 100kHz Vn-Y : SIN wave 1VP-P YIN1 : SIN wave 2VP-P Vn-Y : Staircase signal 1VP-P YIN1 : Staircase signal 2VP-P Vn-Y : Staircase signal 1VP-P YIN1 : Staircase signal 2VP-P Vn-Y : SIN wave 100kHz THD=1.0% YIN1 : SIN wave 100kHz THD=1.0% 5.5 -0.5 -1.0 -1.0 -3 -3 -3 -3 1.4 3.2 6.0 0.0 0.0 0.0 0 0 0 0 1.5 3.8 (50) 6.5 0.5 1.0 1.0 3 3 3 3 dB dB dB dB % % deg deg VP-P VP-P Ω Vn-Y : SIN wave 1VP-P 100kHz YIN2 : SIN wave 2VP-P 100kHz Vn-Y : SIN wave 1VP-P YIN2 : SIN wave 2VP-P Vn-Y : Staircase signal 1VP-P YIN2 : Staircase signal 2VP-P Vn-Y : Staircase signal 1VP-P YIN2 : Staircase signal 2VP-P Vn-Y : SIN wave 100kHz THD=1.0% YIN2 : SIN wave 100kHz THD=1.0% 5.5 -0.5 -1.0 -1.0 -3 -3 -3 -3 1.4 3.2 6.0 0.0 0.0 0.0 0 0 0 0 1.5 3.8 (50) 6.5 0.5 1.0 1.0 3 3 3 3 dB dB dB dB % % deg deg VP-P VP-P Ω Vn-C : SIN wave 1VP-P 100kHz CIN1 : SIN wave 2VP-P 100kHz Vn-C : SIN wave 1VP-P CIN1 : SIN wave 2VP-P CIN1 : Staircase signal 2VP-P CIN1 : Staircase signal 2VP-P Vn-Y : SIN wave 100kHz THD=1.0% YIN1 : SIN wave 100kHz THD=1.0% Vn-C and CIN1 5.5 -0.5 -1.0 -1.0 -3 -3 2.75 5.5 10 6.0 0.0 0.0 0.0 0 0 3.25 6.5 15 (50) 6.5 0.5 1.0 1.0 3 3 dB dB dB dB % deg VP-P VP-P kΩ Ω Differential gain DGY1 Differential phase DPY1 Input dynamic range Output impedance YOUT2 Voltage gain Frequency characteristics DY1 DY2 ZOY1 GY3 GY4 fY3 fY4 Differential gain DGY2 Differential phase DPY2 Input dynamic range Output impedance COUT1 Voltage gain Frequency characteristics Differential gain Differential phase Input dynamic range Input impedance Output impedance DY3 DY4 ZOY2 GC1 GC2 fC1 fC2 DGC1 DPC1 DC1 DC2 ZIC1 ZOC1 Min. Typ. Max. Units 39 55 71 mA 20 I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Item Symbol Measurement conditions Min. Typ. Max. Units GC3 GC4 fC3 fC4 DGC2 DPC2 DC3 DC4 ZIC2 ZOC2 Vn-C : SIN wave 1VP-P 100kHz CIN2 : SIN wave 2VP-P 100kHz Vn-C : SIN wave 1VP-P CIN2 : SIN wave 2VP-P CIN1 : Staircase signal 2VP-P CIN2 : Staircase signal 2VP-P Vn-Y : SIN wave 100kHz THD=1.0% YIN2 : SIN wave 100kHz THD=1.0% CIN2 5.5 -0.5 -1.0 -1.0 -3 -3 2.75 5.5 10 6.0 0.0 0.0 0.0 0 0 3.25 6.5 15 (50) GL1 GL2 fL1 THDL1 DL1 VOFFL1 ZIL1 ZOL1 SIN wave 2.5VP-P 1kHz -6dB Select SIN wave 2.5VP-P 1kHz 0dB Select SIN wave 2.5VP-P 1MHz/1kHz SIN wave 2.5VP-P 1kHz SIN wave 1kHz THD<0.5% DC offset at the switching time -6.5 -0.5 -3.0 -6.0 -5.5 dB 0.0 0.5 dB 0.0 1.0 dB 0.03 0.1 % 2.8 Vrms 0 ±15 mV 60 78 kΩ (120) Ω GL3 GL4 fL2 THDL2 DL2 VOFFL2 ZOL2 SIN wave 2.5VP-P 1kHz -6dB Select SIN wave 2.5VP-P 1kHz 0dB Select SIN wave 2.5VP-P 1MHz/1kHz SIN wave 2.5VP-P 1kHz SIN wave 1kHz THD<0.5% DC offset at the switching time -6.5 -0.5 -3.0 GR1 GR2 fR1 THDR1 DR1 VOFFR1 ZIR1 ZOR1 SIN wave 2.5VP-P 1kHz -6dB Select SIN wave 2.5VP-P 1kHz 0dB Select SIN wave 2.5VP-P 1MHz/1kHz SIN wave 2.5VP-P 1kHz SIN wave 1kHz THD<0.5% DC offset at the switching time -6.5 -0.5 -3.0 GR3 GR4 fR2 THDR2 DR2 VOFFR2 ZOR2 SIN wave 2.5VP-P 1kHz -6dB Select SIN wave 2.5VP-P 1kHz 0dB Select SIN wave 2.5VP-P 1MHz/1kHz SIN wave 2.5VP-P 1kHz SIN wave 1kHz THD<0.5% DC offset at the switching time COUT2 Voltage gain Frequency characteristics Differential gain Differential phase Input dynamic range Input impedance Output impedance LOUT1 Voltage gain Frequency characteristics Total harmonic distortion Input dynamic range Output offset voltage Input impedance Output impedance LOUT2 Voltage gain Frequency characteristics Total harmonic distortion Input dynamic range Output offset voltage Output impedance ROUT1 Voltage gain Frequency characteristic Total harmonic distortion Input dynamic range Output offset voltage Input impedance Output impedance ROUT2 Voltage gain Frequency characteristics Total harmonic distortion Input dynamic range Output offset voltage Output impedance 2.6 42 2.6 2.6 42 -6.5 -0.5 -3.0 2.6 6.5 0.5 1.0 1.0 3 3 20 dB dB dB dB % deg VP-P VP-P kΩ Ω -6.0 -5.5 dB 0.0 0.5 dB 0.0 1.0 dB 0.03 0.1 % 2.8 Vrms 0 ±15 mV (120) Ω -6.0 -5.5 dB 0.0 0.5 dB 0.0 1.0 dB 0.03 0.1 % 2.8 Vrms 0 ±15 mV 60 78 kΩ (120) Ω -6.0 -5.5 dB 0.0 0.5 dB 0.0 1.0 dB 0.03 0.1 % 2.8 Vrms 0 ±15 mV (120) Ω I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Item Symbol Crosstalk ( 1) VOUT1 CTV1 VOUT2 CTV2 YOUT1 CTY1 YOUT2 CTY2 COUT1 CTC1 COUT2 CTC2 LOUT1 CTL1 LOUT2 CTL2 ROUT1 CTR1 ROUT2 CTR2 Terminal voltage Video input terminal VVIP VOUT1/2 terminal VVOP YOUT1/2 terminal VYOP COUT1/2 terminal VCOP Audio input terminal VAIP Audio output terminal VAOP I2C condition (Refer to figure below) Input voltage L VIL Input voltage H VIH Low level output voltage VOL High level input current IIH Low level input current IIL Clock frequency fSCL Data transfer wait time tBUF SCL start hold time tHD : STA SCL low level hold time tLOW SCL high level hold time tHIGH SCL start setup time tSU : STA SDA data hold time tHD : DAT SDA data setup time tSU : DAT SCL rise-time tR SCL fall-time tF SCL stop setup time tSU : STO * Measurement conditions Min. Typ. Max. Units SG1 : 4.43MHz 1VP-P (At mix, SG2/3 input) SG1 : 4.43MHz 1VP-P(At mix, SG2/3 input) SG2 : 4.43MHz 1VP-P SG2 : 4.43MHz 1VP-P SG3 : 4.43MHz 1VP-P SG3 : 4.43MHz 1VP-P 1kHz 2.5VP-P 1kHz 2.5VP-P 1kHz 2.5VP-P 1kHz 2.5VP-P No signal, No load No signal, No load No signal, No load No signal, No load No signal, No load No signal, No load 4.6 3.9 3.2 3.2 4.0 3.9 SDA sink 3mA SDA, SCL=4.5V SDA, SCL=0.4V 0.0 3.0 0.0 -10 -10 -60 -60 -60 -60 -60 -60 -90 -90 -90 -90 -53 -53 -53 -53 -53 -53 -80 -80 -80 -80 dB dB dB dB dB dB dB dB dB dB 4.9 4.2 3.5 3.5 4.3 4.2 5.2 4.5 3.8 3.8 4.6 4.5 V V V V V V 1.5 5.0 0.4 10 10 100 V V V V V kHz µS µS µS µS µS nS nS 1000 nS 300 nS µS 4.7 4.0 4.7 4.0 4.7 200 250 4.0 (The inside of parentheses is design guarantee value.) I2C condition SDA t BUR tR tF SCL P S t HD:STA t LOW t HD:DAT t HIGH t SU:DAT t SU:STA Sr t SU:STO P I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI (Note.1) : Input signal symbol Vn-V=MTV-V, V1-V, V2-V,V3-V, STV-V Vn-Y=V1-Y, V2-Y Vn-C=V1-C, V2-C (Note.2) : 1 Test Circuit of Crosstalk See Test Circuit 2 (Note.3) : Video inputs Vn-V, Vn-Y, and YINn inputs are sync chip clamped, while Vn-C and CINn inputs are non-clamped. * Measuring Circuit Measuring Circuit 1 MITSUMI I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF Measuring Circuit 2 (Crosstalk measurement) I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI I2C BUS SDA S:Start Condition P:Stop Condition A:Acknowledge SCL S 1 2 3 4 5 6 7 8 A 1 2 3 8 A P I2C BUS is inter bus system controled by 2 lines (SDA, SCL). Data are transmitted and received in the units of byte and Acknowledge. It is transmitted by MSB first from the Start conditions. [Control registers] Control registers are data sent from the master for determining the switch conditions. The data format is set as shown in the following figure. S R/W Slave address 1 0 0 1 0 0 0/1 0 A Control register 1 b7 b6 b5 b4 b3 b2 b1 b0 A Control register 2 b7 b6 b5 b4 b3 b2 b1 b0 Address byte A P Control data Out of the Address byte, first 7bit are assigned to the slave address, while the residual 1bit is assigned to the R/W bit. Set the R/W bit to 0 when data are used control registers. As MM1492 slave address, either 90H or 92H can be selected according to the ADR terminal conditions. When ADR terminal is L, 90H is selected. The following figure indicates the control contents of control registers and switches. Each bit of control registers is reset to 0, when power-on. Register b7 b6 b5 b4 b3 1 Audio Gain 1 S/Comp select 1 Video out1 select Audio out1 select 2 Audio Gain 2 S/Comp select 2 Video out2 select Audio out2 select MM1492 consists of one address byte and two control data bytes (3bytes in total). All data over the limited length (4th and subsequent bytes) are fully neglected. For details of the control contents of switches, refer to the separate table. b2 b1 b0 I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI [Status registers] Status registers are data to inform the device status. The data format is set as shown in the following figure. S Slave address 1 0 0 1 R/W 0 0 0/1 1 A Status register b7 b6 b5 Address byte b4 b3 b2 b1 b0 NA P device status Out of the Address byte, first 7bit are assigned to the slave address, while the residual 1bit is assigned to the R/W bit. Set the R/W bit to 1 when data are used status registers. As MM1492 slave address, either 91H or 93H can be selected according to the ADR terminal conditions. When ADR terminal is L, 91H is selected. Set the confirmation acknowledgement after the end of status register to non-acknowledgement. The following figure shows the correspondence of the output data of status registers. b7 b6 b5 b4 b3 b2 P-ON S1 S1 S2 S2 RESET OPEN SEL OPEN SEL b1 b0 P-on RESET : 1 returns when the power on reset is done, 0 returns after reading data once. S1/S2 OPEN : S1/S2 OPEN and SEL are identified by 3 values, and output according to the S1/S2 SEL combinations in the following table. DC voltage of S1/S2 S1/S2 OPEN S1/S2 SEL 0.8V< =DC 0 1 1.3V< =DC< =3.5V 0 0 DC< =4.5V 1 0 [about power on reset] MM1492 is provided with a power on reset function to reset each control register to 0 when power supply is turned on. The power on reset threshold has the hysteresis as shown in following figure. Reset off Reset on 4.3V 5.4V VCC I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF MITSUMI Switch Control Table (1) Video output 1 b6 b5 b4 b3 VOUT1 YOUT1 COUT1 0 0 0 0 Mute Mute Mute 0 0 0 1 MTV-V YIN1 CIN1 0 0 1 0 V1-V YIN1 CIN1 0 0 1 1 V2-V YIN1 CIN1 0 1 0 0 V3-V YIN1 CIN1 0 1 0 1 STV-V YIN1 CIN1 0 1 1 0 0 1 1 1 Mute Mute Mute 1 0 0 0 Mute Mute Mute 1 0 0 1 MTV-V YIN1 CIN1 1 0 1 0 V1-(Y+C) V1-Y V1-C 1 0 1 1 V2-(Y+C) V2-Y V2-C 1 1 0 0 V3-V YIN1 CIN1 1 1 0 1 STV-V YIN1 CIN1 1 1 1 0 1 1 1 1 Mute Mute Mute (2) Audio output 1 Mute terminal < =1.5V (OPEN) b2 b1 b0 LOUT1 ROUT1 0 0 0 Mute Mute 0 0 1 MTV-L MTV-R 0 1 0 V1-L V1-R 0 1 1 V2-L V2-R 1 0 0 V3-L V3-R 1 0 1 STV-L STV-R 1 1 0 1 1 1 Mute Mute Mute Mute > =3.0V (3) Audio gain b7 LOUT1 ROUT1 0 -6dB -6dB 1 0dB 0dB MITSUMI I2C BUS Controlled 5-Input 2-Output AV Switch MM1492AF Application Circuit Note. (1) VOUT is set to 4.2V, While CIN is set to 4.9V. Be careful since the capacity polarity may differ according to the comb filter bias. (2) Each audio output can be set to myte by setting pin 31 to high. The mute is turned off in when pin 19 is open or low.