MSM7731-02 OKI [OKI electronic componets], MSM7731-02 Datasheet - Page 41
MSM7731-02
Manufacturer Part Number
MSM7731-02
Description
Dual Echo Canceler & Noise Canceler with Dual Codec for Hands-Free
Manufacturer
OKI [OKI electronic componets]
Datasheet
1.MSM7731-02.pdf
(53 pages)
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CONTROL METHOD BY MCU
1 Semiconductor
Start telecommunication
Set CR1 to CR12
Power supply ON
Cancel PDN/RST
Write internal memory?
Set PDN/RST
CR11-B7 = 1
CR11-B7 = 0
Set CR0
START
Yes
Yes
No
No
No
Yes
Set other memory?
CR1 = 80h
CR1 = 00h
Set CR6
Set CR7
Set CR8
Set CR9
Yes
No
No
Yes
Internal memory
write
Initial mode
FEDL7731-02-04
MSM7731-02
41/53
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