NJU26040V-09D NJRC [New Japan Radio], NJU26040V-09D Datasheet - Page 9

• Manufacturer Part Number: NJU26040V-09D
• Description: SRS TruSurround HD/HD4 Decoder
• Manufacturer: NJRC [New Japan Radio]

Ver.2009-02-10
sequence. I
6) This offers additional flexibility to a system design by four different SLAVE addresses of the
NJU26040-09A. The AD1 and AD2 pins can arbitrarily set up an address. The I
decided by connection of AD1/AD2 pins.
read byte is shifted out of the SDOUT pin. Data transfers are MSB first and are enabled by setting the
Slave Select pin Low ( SSb=0 ). Data is clocked into SDIN on rising transitions of SCK. Data is latched at
SDOUT on falling transitions of SCK except for the first byte (MSB) which is latched on the falling
transitions of SSb.
needs a pull-up resistor when SDOUT is Hi-Z.
I
4-Wire Serial Interface
2
C bus
When the NJU26040-09D is configured for I
AD1 and AD2 pins are used to configure the seven-bit SLAVE address of the serial host interface. (Table
SHI bus communication is full-duplex; a write byte is shifted into the SDIN pin at the same time that a
SDOUT is Hi-Z in case of SSb = “High”. SDOUT is Open-drain output in case of SSb = “Low”. SDOUT
Table 6.
Note : In case of the NJU26040-09D only single-byte transmission is available. The serial host interface
Note : When the data-clock is less than 8 clocks, the input data is shifted to LSB side and is sent to the DSP
SSb
SCK
SDIN
SDOUT
supports “Standard-Mode (100kbps)” and “Fast-Mode (400kbps)” I
core at the transition of SSb=”High”. When the data-clock is more than 8 clocks, the last 8 bit data
becomes valid. After sending LSB data, SDOUT transmits the MSB data which is received via SDIN
until SSb becomes “High”.
2
C bus interface transfers data to the SDA pin and clocks data to the SCL pin.
bit7
0
0
0
0
I
2
* SLAVE address is 0 when AD1/2 is “Low”. SLAVE address is 1 when AD1/2 is “High”.
C bus SLAVE Address
Hi-Z
Start
bit
bit6
MSB
bit7
bit7
0
0
0
0
Fig. 4 4-Wire Serial Interface Timing
bit6
bit6
bit5
1
1
1
1
Slave Address ( 7bit )
bit5
bit5
1
1
1
1
bit4
2
C bus communication during the Reset initialization
1
1
1
1
bit3
bit1
bit1
AD2
bit2
0
0
1
1
LSB
bit0
bit0
2
R/W
C bus data transfer.
bit
unstabl
NJU26040-09D
AD1
bit1
e
0
1
0
1
2
C address of AD1/AD2 is
ACK
Hi-Z
NJU3555
R/W
R/W
bit0
- 9 -