SHARP_LH7A404 Datasheet, PDF (39/51 Pages) Sharp Electrionic Components – 32 BIT SYSTEM ON CHIP

32-Bit System-on-Chip
LH7A404
For Motorola SPI format, the serial frame pin (SSP-
FRM) is active LOW. The SPO and SPH bits in SSP
Control Register 0 determine SSPCLK and SSPFRM
operation in single and continuous modes. See Figures
14 through 21.
SSPCLK
nSSPFRM
SSPRXD
MSB
4 to 16 BITS
LSB Q
SSPTXD
MSB
LSB
NOTE: Q is undefined.
LH7A404-26
Figure 14. Motorola SPI Frame Format (Single Transfer) with SPO = 0 and SPH = 0
SSPCLK
nSSPFRM
SSPTXD/
SSSRXD
LSB
MSB
LSB
4 to 16 BITS
MSB
LH7A404-27
Figure 15. Motorola SPI Frame Format (Continuous Transfer) with SPO = 0 and SPH = 0
SSPCLK
nSSPFRM
SSPRXD
Q MSB
4 to 16 BITS
LSB Q
SSPTXD
MSB
LSB
NOTE: Q is undefined.
LH7A404-28
Figure 16. Motorola SPI Frame Format (Single Transfer) with SPO = 0 and SPH = 1
Advance Data Sheet
39