lc8902q Sanyo Semiconductor Corporation, lc8902q Datasheet - Page 8

• Manufacturer Part Number: lc8902q
• Description: Digital Audio Interface Receiver
• Manufacturer: Sanyo Semiconductor Corporation

Microcomputer Interface
The microcomputer interface is used for specifying the data input pin, for setting the output data format, and for
specifying subcode output, system stop, and analog source mode. The figure shows the interface I/O formats.
Microcomputer Interface Formats
Address
The bits B0 to A3 in the format figure are the address. There are two addresses allocated to the LC8902/Q, one for input
and one for output. The microprocessor must specify the input address to input data and the output address to output data.
Address Code
Microcomputer Interface Input
1. Input pin settings
Data input
Data output
The DIN1 to DIN4 data input pins have built-in amplifiers and can accept signals with levels of about 400 mVp-p.
DIN5 is a special-purpose input pin for optical input.
The data input system multiplexer is controlled by inputs from the microcomputer interface. The table shows the
relationship between the code in bits I5 to I13 in the microcomputer interface format and the data demodulation
outputs DOUT1 and DOUT2.
Mode
B0
H
L
B1
H
L
B2
H
H
B3
L
L
A0
L
L
A1
H
H
A2
H
H
LC8902, 8902Q
A3
L
L
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