ml7037-003 Oki Semiconductor, ml7037-003 Datasheet - Page 16

• Manufacturer Part Number: ml7037-003
• Description: Dual Echo Canceler & Noise Canceler With Dual Codec For Hands-free
• Manufacturer: Oki Semiconductor

PEDL7037-003-01Zz_Digest
OKI Semiconductor
ML7037-003
MCUSEL
This pin selects whether the microcontroller interface is used or unused.
When the microcontroller interface is used, set this pin to a logic ‘0’.
When the microcontroller interface is not used, set this pin to a logic “1”.
A logic ‘1’ with this pin automatically determines general-purpose input port pins to work as their secondary
functions.
This pin is OR’ed with OPE_STAT-bit [CR0-B0].
Refer to NOTE ON USE.
DEN, EXCK, DIN, DOUT
These are serial control ports for the microcontroller interface.
This LSI has 32 bytes control registers, and the data read and write between the registers and the microcontroller
are made via these pins.
The DEN pin is a data read/write enabling signal input pin, the EXCK pin is a clock signal input pin for data
shifting, the DIN pin is an address and data input pin, the DOUT pin is a data output pin. If the mirrocontroller
interface is not used, set the DEN pin to a logic “1”, the EXCK pin and DIN pins to a logic “0”, and the MCUSEL
pin to logic ‘1’.
Figure 9-12 shows the input/output timing.
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