BU26154MUV_15 Datasheet, PDF (73/90 Pages) Rohm – Monaural Audio CODEC with Touch Panel Interface

BU26154MUV
Datasheet
PLPFC0L [7:0] / PLPFCOH [7:0]
This bit is to set low pass filter cut off frequency for DAC-path.
This value has to change by sampling frequency.
Please use Filter Setting Calculation program for *PLPFC0L / PLPFC0H setting.
Rec Programmable LPF Setting Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x1
0xa6 0xa7
-
-
-
-
-
-
RLPFOD RLPFEN
-
-
-
-
-
-
0
0
This register is to set “LPF” block for ADC-path (record) in digital signal flow. This is to set Enable/Disable and filter order.
This function is exclusive to “HPF2” controlled by HPF2EN of DSP Filter Function Enable register.
This function is effective for ADC-path (record) at “RLPFEN=1” and “SEMODE [7] =1”.
RLPFEN
This bit is to set Enable/Disable of low pass filter for ADC-path.
RLPFEN
Explanation
0
LPF for DAC-path is Disable (HPF2 is available)
1
LPF for DAC-path is Enable (HPF2 is not available. HPF2EN-bit
is not valid)
RLPFOD
This bit is to set number of low pass filter order for ADC-path.
RLPFOD
Explanation
0
LPF for ADC-path is second-order
1
LPF for ADC-path is first-order
Rec Programmable LPF Coef (L) Register
Rec Programmable LPF Coef (H) Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x1
0xa8 0xa9
RLPFC0L
0
0
0
0
0
0
0
0
0x1
0xaa 0xab
RLPFC0H
0
0
0
0
0
0
0
0
This register is to set “LPF” block for ADC-path (playback) in digital signal flow.
Audio Analog Control2 Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(initial)
0x02 0x04 0x05
-
-
-
- HPLSEN -
-
-
-
-
1
-
1
1
-
-
HPLSEN
This bit controls the level shifter for headphone amplifier.
Setting
Explanation
0x0
Disable the level shifter for headphone amplifier
0x1
Enable the level shifter for headphone amplifier
Audio Analog Control1 Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(initial)
0x02 0x12 0x13
-
-
-
-
-
-
- AREFI1EN
-
-
-
-
-
-
-
1
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TSZ02201-0V2V0E500110-1-2
26.Oct.2015 Rev.002