LV25450PNW Datasheet, PDF (25/40 Pages) Sanyo Semicon Device – For Automotive Applications DSP Tuner Front End

LV25450PNW
Serial Data I/O Procedures
The LV25450PNW uses the SANYO audio IC serial bus format. Data is input and output using a CCB (Computer
Control Bus). The LV25450PNW adopts an 8-bit address version of the CCB format.
Address
I/O mode
B0 B1 B2 B3 A0 A1 A2 A3
Contents
[1]
IN1
IN1B
0
0
0
1
0
1
0
0 • Control data input mode. PLL setup
0
1
0
1
0
1
0
0 ^{• 32 bits of data are input}
• IN1B is the 2-tuner mode address (when pin 43 is tied to ground)
[2]
IN2
IN2B
[3]
IN3
IN3B
1
0
0
1
0
1
0
0 • Control data input mode. PLL setup
1
1
0
1
0
1
0
0 ^{• 32 bits of data are input}
• IN2B is the 2-tuner mode address (when pin 43 is tied to ground)
1
0
0
1
0
1
1
0 • The tuner block is set up in control data input (serial data input) mode.
0
0
0
1
0
1
1
0 ^{• 32 bits of data are input - There is a sub-address}
• IN3B is the 2-tuner mode address (when pin 43 is tied to ground)
I/O mode determined
CE
CL
DI
B0 B1 B2 B3 A0 A1 A2 A3
First Data IN1/2
i) Serial data inputs (IN1/IN2/IN3) tSU, tHD, tES, tEL, tEH > 0.45μs tLC < 0.45μs
tEL
tES
CE
CL
tSU
tHD
DT
B0 B1 B2 B3 A0 A1 A2 A3 P0 P1 P2 P3
Internal data
tEH
* CTS GT0 GT1
tLC
(*1) Since the DO pin is an N-channel open drain circuit, the times for the data to change will differ depending on the
value of the pull-up resistor and printed circuit board capacitance.
(*2) The DO pin is normally left open.
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