LV1110NM Datasheet, PDF (13/22 Pages) Sanyo Semicon Device – Digital Surround Processor IC

LV1110NM
Control Commands
A = L, B1 = L, B2 = L
• D1, D2, and D3: Function input switching. In CD and MD modes an output buffer is used, but the 6-dB amplifier
output is used for tape, tuner, and EXT modes. The input impedance is 50 kΩ.
• D4, D5, and D6: Matrix mode switching and total through switching. The signal selected by the matrix is mixed to the
left and right channels according to D10 and used to form the surround signal according to the D11 and D12 delay
signal selection bits. In total through mode, the left and right signals are directly output with the matrix and graphic
equalizer blocks bypassed to provide a high signal-to-noise ratio output.
• D7: Audio rejection on/off. When this bit is set to 1, L+R mode must be selected with D4, D5, and D6.
• D8: Microphone mixing on/off.
• D9: Key control interface on/off. The signal (BGM) set up by the matrix block is output from pin 6 and the signal
processed by key control is mixed into the left and right channels by inputting it to pin 7.
• D10: Left and right channel bypass/matrix switching. When matrix is selected, monaural and karaoke multi-sound
software L/R only modes can be set up.
• D11: Surround signal I/O (input: pin 32, output: pin 33) on/off.
• D12 and D13: Delay line signal input switching. When SW = B, the signal processed by key control can be input to the
delay line.
A = L, B1 = H, B2 = L
• D1 and D2: Delay line output filter switching: A 5-kHz or higher low-pass filter cutoff frequency is recommended for
delay times of 15 to 50 ms, and a 2-kHz low-pass filter for 100 and 120 ms delay times.
• D3, D4, and D5: Reverb volume switching. Since oscillation may occur at the 0 dB setting, always use a setting of -1
dB or lower.
• D6, D7, and D8: Delay time setting.
• D9: System muting on/off. Always use the system muting function (D9) when changing the delay time. Turning the
muting function on and the off again initializes memory and prevents incorrect operation.
• D10: Left and right channel output (pins 20 and 21) muting on/off.
• D11: Front mix right channel phase switching. Selects whether the delayed signal is added into the right channel in
phase or out of phase relative to the left channel.
• D12 and D13: Front mix level switching.
A = L, B1 = L, B2 = H
• D1, D2, and D3: Graphic equalizer bass boost/cut level setting.
• D4, D5, and D6: Graphic equalizer mid boost/cut level setting.
• D7, D8, and D9: Graphic equalizer treble boost/cut level setting.
• D10 and D11: Port output high/low level settings. When set to high, the corresponding port pin is pulled up to VDD
through a 51-kΩ resistor, and when set to low, the pin is pulled down with an npn transistor (about 1 kΩ).
A = L, B1 = H, B2 = H, D1 = L
• D2, D3, D4, D5, D6, D7, and D8: Left channel master volume setting.
• D9, D10, and D11: Record volume setting.
A = L, B1 = H, B2 = H, D1 = H
• D2, D3, D4, D5, D6, D7, and D8: Right channel master volume setting.
• D9: Record output signal switching. Selects function output or mixer output.
• D10 and D11: Record output on/off (muting). D10 controls the pin 2 and pin 52 outputs and D11 controls the pin 3 and
53 outputs.
No. 6094-13/22