SH7720 Datasheet, PDF (812/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 22 Analog Front End Interface (AFEIF)
22.4.2 AFE Interface
(1) Serial Data Transfer Specification
The specification for serial data transfer is base on that of STLC7550, which is an AFE
manufactured by ST microelectronics. STLC7550 has a self-oscillation mode, and flame
synchronous signal AFE_FS used for serial transfer and serial bit clock AFE_SCLK are supplied
by AFE. Figure 22.5 shows the serial transfer interface. After outputting the valid data,
AFE_TXOUT holds the value of LSB.
AFE_FS
AFE_SCLK
AFE_TXOUT
MSB
AFE_RXIN
Sampling period
LSB
Figure 22.5 AFE Serial Interface
Rev. 3.00 Jan. 18, 2008 Page 750 of 1458
REJ09B0033-0300