ml7074-003 Oki Semiconductor, ml7074-003 Datasheet - Page 41

• 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

CONTROL METHOD BY MCU
OKI 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
*
As for CR11, MSM7731-02 internally repeats writing READY bit (CR11-B7) in
itself, and write from an external MC12U CR11might conflict to the internal write
action. Therefore, when you write some some non-default data into CR11,
please make sure to read out the CR11 after you write and confirm if the
designated values are read. If an unintended values are read out, please repeat
the write into CR11 till your read out matches to what you intend to write into
CR11.
Set other memory?
CR1 = 80h
CR1 = 00h
Set CR6
Set CR7
Set CR8
Set CR9
No
Yes
No
Yes
Internal memory
write
Initial mode
FEDL7731-02-11
MSM7731-02
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