LC8900KQ Datasheet, PDF (8/12 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC8900KQ
Microcontroller Interface
The microcontroller interface function can be used by setting the MODE pin level to high. In this function mode, the
pins CE, CL, DI and DO can be used to allow the interface between the LSI chip and a microcontroller. This
microcontroller interface allows the microcontroller to control and process the input pin selection output data format,
copy information and sampling frequency output.
Set the mode CE, CL, and DI pins to the low when the microcontroller interface is not used.
Input data format
Output data format
Bits B0 to A3 of the DI signal in the format figures on the preceding page are used to specify an 8-bit address. These 8-
bits are used to specify the addresses both in the input and output operations.
B0 B1 B2 B3 A0 A1 A2 A3
Data input mode
1
0
1
0
0
1
1
0
Data output mode 0
1
1
0
0
1
1
0
(1) Data input mode
Bits DI0 to DI4 of the DI signal are used to select the operation modes shown in the tables below.
DI1 = L 16-bit data MSB first output mode
DI1 = H 20-bit data LSB first output mode
DI2 DI3
L
L
L
H
H
L
H
H
input pin selection
DIN1
DIN2
DIN3
DIN4
DOUT
DIN1 data output
DIN2 data output
DIN3 data output
low level signal output (fixed level output)
• When the MODE pin level is set to high, the input pins and output data format are selected by the microcontroller.
This means that the selection data input to the SEL1, SEL2 and OUTMODE pins has no significance.
Just after the XMODE pin is changed to high from low, DI0 to DI4 are set to low.
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