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NJU26203AV Datasheet(PDF) 7 Page - New Japan Radio |
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NJU26203AV Datasheet(HTML) 7 Page - New Japan Radio |
7 / 11 page NJU26203A -7- Ver.2008-12-10 Audio Interface The NJU26203A audio interface provides industry serial data formats of I2S, MSB-first Left-justified or MSB-first 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 The NJU26203A can be controlled via Serial Host Interface (SHI) using either of two serial bus formats : I2C bus or 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. The detail I2C bus and 4-Wire Serial bus information are described in the ‘NJU26200 Series Hardware Data Sheet’. Table 4 Serial Host Interface Pin Descriptions Pin No. Symbol Setting Host Interface Low I2C Bus Interface 16 SEL High 4-Wire Serial Interface Table 5 Serial Host Interface Pin Description Pin No. Symbol (I 2C /Serial) I 2C bus Interface 4-Wire Serial Interface 29 AD1/SDIN I 2C Address Select Bit1 Serial data input 30 AD2/SSb I 2C Address Select Bit2 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 2C Bus is selected, the SDA/SDOUT pin is a bi-directional Open Drain output. This pin, which is assigned for I 2C Bus, requires a pull-up resistance. When 4-Wire Serial bus is selected, the SDA/SDOUT pin is CMOS output. The SDA/SDOUT pin isn’t 5.0V Input tolerant. |
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