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I2C Bus Control 13-Input 4-Output Audio Switch MM1699XJ
I2C Bus Control 13-Input 4-Output Audio Switch
Monolithic IC MM1699XJ
Outline
This IC is an I2C bus controlled audio switch IC for rear projection, PDP, and LCD TVs (medium-end to highend TVs). The design of the input select block can be simplified by using with a video switch IC. It provides stereo or selected mono output.
Features
1. 13 audio signal (L, R) input channels, 4 output channels 2. 4 output channels are independent and can receive any input. 3. High input dynamic range (3Vrms) 4. All the outputs can be switched to stereo/mono. 5. Built-in gain switch (0dB/12dB) * OUT1 only 6. Built-in power save function
Package
SSOP-42A
Applications
1. Rear projection TVs 2. PDP TVs 3. TVs (medium-end to high-end TVs) 4. CRT TVs
Pin Assignment
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 SSOP-42 (TOP VIEW) 1 2 3 4 5 6 7 R3 L4 R4 L5 R5 L6 R6 8 9 10 11 12 13 14 L7 R7 L8 R8 L9 R9 L10 15 16 17 18 19 20 21 R10 L11 R11 L12 R12 L13 R13 22 23 24 25 26 27 28 BIAS MUTE ADR SDA SCL GND ROUT4 29 30 31 32 33 34 35 LOUT4 ROUT3 LOUT3 ROUT2 LOUT2 ROUT1 ROUT1 36 37 38 39 40 41 42 VCC VCC L1 R1 L2 R2 L3
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I2C Bus Control 13-Input 4-Output Audio Switch MM1699XJ
Block Diagram
L1 38 L2 40 L3 42 L4 2 L5 4 L6 6 L7 8 L8 10 L9 12 L10 14 L11 16 L12 18 L13 20 R1 39 R2 41 R3 1 R4 3 R5 5 R6 7 R7 9 R8 11 R9 13 R10 15 R11 17 R12 19 R13 21
28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k 30k 28k
0dB
0dB
0dB
6dB/ 18dB
35 LOUT1
0dB
0dB
0dB
0dB 6dB/ 18dB 0dB
34 ROUT1
0dB
0dB
0dB 6dB 0dB
33 LOUT2
0dB 30k 28k 30k 28k 0dB 30k 28k 30k 28k 0dB 30k 28k 30k 28k 0dB 30k 28k 30k 28k 0dB 30k 28k 0dB 30k 28k 0dB 30k 28k 30k 28k 0dB 30k 28kk 0dB 30k 0dB 6dB 0dB 0dB 6dB 0dB
32 ROUT2
31 LOUT3
0dB 6dB
30 ROUT3
6dB
29 LOUT4
6dB
28 ROUT4
BIAS 22 Bias 36 VCC 37 VCC 27 GND 26
Logic 25 24 23
SCL SDA ADR Mute
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I2C Bus Control 13-Input 4-Output Audio Switch MM1699XJ
Pin Description
Pin No. Pin name Pin description Function Audio line input Pin to input audio signals. It includes 13 channels; L1 - L13, R1 - R13. Voltage gain can be adjusted by changing a constant of an external input resistor. Adjusting voltage gain with an external input resistor External input resistor 0Ω 2kΩ 3.9kΩ 5.6kΩ 1~21 38~42 L1~L13 R1~R13 Input impedance Voltage gain of OUT1 Voltage gain of OUT2-4 58kΩ 0.3dB/12.3dB 0.3dB 60kΩ 0dB/12dB 0dB 61.9kΩ -0.3dB/11.7dB -0.3dB 63.6kΩ -0.5dB/11.5dB -0.5dB
Terminal voltage: 4.50V typ. Input impedance: 60kΩ typ. Input impedance contains an external input resistor of 2kΩ. Input dynamic range: 3Vrms typ.
*
External circuit
Line input of Audio 1µ 600 2k
Equivalent circuit diagram
Input VCC (=9V) Ref 28k
If unused, connect to GND with 1µF. Input signal
Audio Signal 0.5Vrms GND
30k
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I2C Bus Control 13-Input 4-Output Audio Switch MM1699XJ
Pin No.
Pin name
Pin description Function Audio line output 1 Pin to output audio signals · Select voltage gain 0dB/12dB with control resister, b34. (b34=0: 0dB mode, b34=1: 12dB mode) · Select stereo/mono with control registers, b21/b20. (b21=0 b20=0: stereo, b21=0 b20=1: mono1, b21=1 b20=0: mono2) Terminal voltage: 4.50V typ. Voltage gain: 0dB/12dB typ. Frequency characteristic: -3dB at 50kHz min.
34~35
LOUT1 ROUT1
External circuit
10µ 10k Line output1 of Audio
Equivalent circuit diagram
VCC (=9V)
If unused: open Output signal
Audio Signal 0.5Vrms
50
Output
GND
Function Audio line output 2-4 Pin to output audio signals · Select stereo/mono with control registers b27 - b22. Audio line output 2 (b23=0 b22=0: stereo, b23=0 b22=1: mono1, b23=1 b22=0: mono2) Audio line output 3 (b25=0 b24=0: stereo, b25=0 b24=1: mono1, b25=1 b24=0: mono2) Audio line output 4 (b27=0 b26=0: stereo, b27=0 b26=1: mono1, b27=1 b26=0: mono2) Terminal voltage: 4.50V typ. Voltage gain: 0dB typ. Frequency characteristic: -3dB at 50kHz min. External circuit Equivalent circuit diagram
10µ 10k Output Line output 2~4 of Audio
28~33
LOUT2~4 ROUT2~4
VCC (=9V)
If unused: open Output signal
Audio Signal 0.5Vrms GND
50
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I2C Bus Control 13-Input 4-Output Audio Switch MM1699XJ
Pin No.
Pin name
Pin description Function Slave address select pin I2C slave address 94H or 96H can be selected with voltage to be applied to this pin. Set ADR pin to "L" for address 94H and "H" for 96H. Threshold: 2.0V typ. Input impedance: 100kΩ typ. External circuit Equivalent circuit diagram
24
ADR
9V (VCC) [96H]
[94H] VCC (=9V) 0V (GND) ADR
If unused: open Input signal
DC voltage: 0V (GND) or 9V (VCC)
GND
Function
Data input of I2C BUS I/O pin for data signal of I2C BUS Threshold: 2.1V typ.
External circuit 25 SDA
Equivalent circuit diagram
VCC (=9V)
Microprocessor
SDA
Input signal
Input signal: Control .