ml7074-003 Oki Semiconductor, ml7074-003 Datasheet - Page 47

• Manufacturer Part Number: ml7074-003
• Description: Dual Echo Canceler & Noise Canceler With Dual Codec For Hands-free Msm7731-02dual Echo Canceler & Noise Canceler With Dual Codec For Hands-free
• Manufacturer: Oki Semiconductor

DIFFERENCE BETWEEN MSM7731-01 AND MSM7731-02
Note*1: Refer to the description of “(12) CR11 (SYNC-PDWN Control Register)” of this data sheet.
1. Pins
2. Control registers
OKI Semiconductor
Noise Attenuation Selection
Noise Canceler I/O Gain
Adjustment Function
Acoustic Echo Canceler
Attenuator Function
Line Acoustic Echo
Canceler Coefficient
Update Function
SYNC Power-down
(MSM7731-01)
NCTHR
TEST8
LHLD
AHLD
CR1-B0
CR12-B2
CR4-B2
CR5-B2
CR4-B5
CR5-B5
Function
→
→
→
→
(MSM7731-01)
NCTHR
LHLD
AHLD
X
X
Control method
MCU Control
MCU Control
MCU Control
MCU Control
MCU Control
Pin Control
Pin Control
Pin Control
Pin Control
Pin Control
(MSM7731-02)
NCSEL1
NCSEL2
NCPAD1
NCPAD2
X
variable by initial download
17 dB or through selectable
17 dB or through selectable
None
None
variable by initial download
0 dB or 6 dB selectable
by AATT bit
0 dB or 6 dB selectable
by AATT pin
ON or OFF selectable
by AHLD, LHLD bit
ON or OFF selectable
by AHLD, LHLD pin
Power down function
(PDN/RST)
ON or OFF selectable
by SYPDN bit *1
None
by NCTHR bit
by NCTHR pin
→
→
→
→
→
MSM7731-01
(MSM7731-02)
NCSEL1
→
NCPAD1
NCPAD2
LHLD
AHLD
NCSEL2
variable by initial download
17 dB, 13.5 dB, 8 dB or through
selectable by NCSEL1, 2 bits
17 dB, 13.5 dB, 8 dB or through
selectable by NCSEL1, 2 pins
±0 dB, ±6 dB, ±12 dB or ±18 dB
selectable by NCPAD1, 2 bits
±0 dB, ±6 dB, ±12 dB or ±18 dB
selectable by NCPAD1, 2 pins
variable by initial download
6 dB or 12 dB selectable
by AATT bit
6 dB or 12 dB selectable
by AATT pin
ON or OFF selectable
by AHLD, LHLD bits
always updated (ON)
Power down function (PDN/RST)
ON or OFF selectable
by SYPDN bit *1
always operated (ON) *1
Power down function (PDWN)
MSM7731-02
FEDL7731-02-11
MSM7731-02
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