NJU26203A

-7-

Ver.2008-12-10

Audio Interface

Right-justified. The NJU26203A audio interface provides four data inputs, SDI0, SDI1, SDI2 and SDI3, and four data

outputs, SDO0, SDO1, SDO2 and SDO3 as shown in table 2 and 3. The input serial data is selected by the firmware

command.

Table 2

Serial Audio Input Pin

Description

Pin No.

Symbol

Stereo input

Multi channel input

4

SDI0

3

SDI1

Audio Data Input (L/R)

(SDI0/SDI1 pin select)

Audio Data Input (L/R)

(SDI0/SDI1 pin select)

2

SDI2

None

Audio Data Input 2 (C/SW)

1

SDI3

None

Audio Data Input 3 (LS/RS)

Table 3

Serial Audio Output Pin

Pin No.

Symbol

Description

40

SDO0

Audio Data Output 0 (LB/RB)

39

SDO1

Audio Data Output 1 (L/R)

38

SDO2

Audio Data Output 2 (C/SW)

37

SDO3

Audio Data Output 3 (LS/RS)

Host Interface

4-Wire serial bus. Data transfers are in 8 bits packets (1 byte) when using either format. The SHI operates only in a

SLAVE fashion. A host controller connected to the interface always drives the clock (SCL / SCK) line and initiates data

transfers, regardless of the chosen communication protocol.

Sheet’.

Table 4 Serial Host Interface Pin Descriptions

Pin No.

Symbol

Setting

Host Interface

Low

16

SEL

High

4-Wire Serial Interface

Table 5

Serial Host Interface Pin Description

Pin No.

Symbol

(I

I

4-Wire Serial Interface

29

AD1/SDIN

I

Serial data input

30

AD2/SSb

I

Slave select

31

SCL/SCK

Serial Clock

Serial Clock

32

SDA/SDOUT

Serial Data Input/Output

(Open Drain output)

Serial data output

(CMOS Output)

Note:

When I

for I

The SDA/SDOUT pin isn’t 5.0V Input tolerant.