YMF753 Datasheet, PDF(7/26 Page) YAMAHA CORPORATION – AC97 Revision2.2 Audio CODEC with Digital Audio I/F

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YMF753 Datasheet, PDF (7/26 Pages) YAMAHA CORPORATION – AC97 Revision2.2 Audio CODEC with Digital Audio I/F

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YMF753

02h : Master Volume (Read/Write, Default: 8000h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Mute -

ML5-0

MR5-0

Mute..............Setting this bit to â1â mutes both left and right channels of the line output.

ML5-0...........These bits determine the volume level of the line output left channel by 1.5dB step. The volume

range is from 0dB to -46.5dB. When all bits are set to â0â, volume is maximum (0dB) and when

they are set to â011111bâ, volume is minimum (-46.5dB). And when ML5 bit is set to â1â, the

volume level is minimum (-46.5dB), then their status become â011111bâ.

MR5-0...........These bits determine the volume level of the line output right channel by 1.5dB step.

Setting to them is the same as the upper ML5-0 bits.

04h : LNLVL Volume (Read/Write, Default: 0000h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Though the register can be written any value, it does not function.

0000h is always read out.

06h : Master Volume Mono (Read/Write, Default: 8000h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Mute -

MM5-0

Mute..............Setting this bit to â1â mutes the monaural output.

MM5-0..........These bits determine the volume level of the monaural output by 1.5dB step. The volume range

is from 0dB to -46.5dB. When all bits are set to â0â, volume is maximum (0dB) and when they

are set to â011111bâ, volume is minimum (-46.5dB). And when MM5 bit is set to â1â, the

volume level is minimum (-46.5dB), then their status become â011111bâ

08h : Master Tone (Read/Write, Default: 0707h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

BA2-0

TR2-0

BA2-0 ...........These bits determine the bass level by 1.5dB step. The tone range is from 0dB to +10.5dB.

When all bits are set to â0â, tone is maximum (+10.5dB) and when all bits are set to â1â, tone is

minimum (0dB)

TR2-0............These bits determine the treble level by 1.5dB step. Setting to them is the same as the upper

BA2-0.

March 6, 2001

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