Renesas SH7781 用户手册

19.   Display Unit (DU) 

Rev.1.00  Jan. 10, 2008  Page 959 of 1658 

REJ09B0261-0100 

 

When in master mode, a CSYNC (composite sync) signal is output. EQWR is used to set the low-
level pulse width of the CSYNC equal pulse. SPWR is used to set the low-level pulse width of the 
CSYNC separation pulse. 

The CSYNC waveform is selected using the CSY bit in DSMR. 

HSW

HSYNC 

VSYNC 

CSYNC 

(CSY = 00) 

EQW 

(CSY = 10) 

(CSY = 11) 

HC 

SPW 

1/2HC 

When HC is odd, it is rounded to an even value.

Equivalent pulse: 
2.5 rasters

Separation pulse: 
2.5 rasters

Equivalent pulse:
2.5 rasters

Equivalent pulse: 
3 rasters

Separation pulse: 
3 rasters 

Equivalent pulse: 
3 rasters