Datasheet

Maxim Integrated │ 122
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Table 51. Parametric Equalizer Playback Level Configuration Register
Table 50. DSP Biquad Filter Enable Register
ADDRESS: 0x28
DESCRIPTION
BIT NAME TYPE POR
7 — — — —
6 — — — —
5 — — — —
4 EQCLP R/W 0
Enables DAI Digital Input Equalizer Clipping Detection
1: Equalizer clip detect disabled.
0: Equalizer clip detect enabled.
3
DVEQ[3:0] R/W
0
DAI Digital Input Equalizer Attenuation Level Conguration (A
V_EQ
)
2 0
0x0: 0dB 0x4: -4dB 0x8: -8dB 0xC: -12dB
0x1: -1dB 0x5: -5dB 0x9: -9dB 0xD: -13dB
0x2: -2dB 0x6: -6dB 0xA: -10dB 0xE: -14dB
0x3: -3dB 0x7: -7dB 0xB: -11dB 0xF: -15dB
1 0
0 0
ADDRESS: 0x41
DESCRIPTION
BIT NAME TYPE POR
7 — — — —
6 — — — —
5 — — — —
4 — — — —
3 RECBQEN R/W 0
Enable Biquad Filter in Record Path
0: Biquad lter not used.
1: Biquad lter used in ADC path.
2 EQ3BANDEN R/W 0
Enable 3-Band EQ in DAC Path (Bands 4–7 Are Not Used)
0: 3-band EQ disabled.
1: 3-band EQ enabled. Only valid if EQ7BANDEN == 0 and EQ5BANDEN == 0.
1 EQ5BANDEN R/W 0
Enable 5-Band EQ in DAC Path (Bands 6 and 7 Are Not Used)
0: 5-band EQ disabled.
1: 5-band EQ enabled. Only valid if EQ7BANDEN == 0
0 EQ7BANDEN R/W 0
Enable 7-Band EQ in DAC Path
0: 7-band EQ disabled.
1: 7-band EQ enabled. This makes EQ5BANDEN and EQ3BANDEN redundant.