LC07422T Datasheet, PDF (10/10 Pages) Sanyo Semicon Device – CMOS IC Audio CODEC with Video Driver

LC07422T
Microcontroller Serial Interface
The internal registers values are written by the serial interface consisting of the three CS_X, SCLK, and SDin lines.
When the CS_X pin is set low, the LC07422T is switched into the mode that enables operation. The data is received on
a byte basis with MSB first. Continuous access (burst access) is also possible, and the addresses incremented by 1 are
accessed in sequence with each byte following access to the register specified by the address byte.
If the size of data exceeding the highest address (1D) is accessed in this process, the data concerned is treated as invalid.
In other word, the address never wraps around to 00 (HEX). The maximum data transfer rate (maximum SCLK
frequency) depends on the MCLK pin clock. Refer to the section “Switching characteristics.”
• Transferring data to one address: Data (D) is written in address (A)
CS_X
A[7:0]
D[7:0]
X
: Designated address
: Register data
: Invalid
SCLK
X
X
SDin
X
A[7] A[6] A[5] A[4] A[3] A[2] A[1] A[0] D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0]
X
ADDRESS BYTE
WRITE DATA (address A)
• Transferring data to contiguous addresses: Data (D0) is written in address (A),
and data (D1) is written into address (A+1).
CS_X
SCLK
X
SDin
X
A[7] A[6] A[5] A[4] A[3] A[2] A[1] A[0] D0[7] D0[6] D0[5] D0[4] D0[3] D0[2] D0[1] D0[0] D1[7] D1[6] D1[5] D1[4] D1[3] D1[2] D1[1] D1[0]
ADDRESS BYTE
WRITE DATA (address A) WRITE DATA (address A+1)
X
Dn[0] X
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PS No.A0908-10/10