Renesas SH7781 User Manual

Page 988

19. Display Unit (DU)

Rev.1.00 Jan. 10, 2008 Page 958 of 1658
REJ09B0261-0100

Table 19.14 Correspondence Table of Settings of Display Timing Generation Registers

Synchronization Method

Register Name

Bit Name

Master Mode

TV Sync Mode

Horizontal display start position
register (HDSR)

HDS

hsw + xs - 19

hsw + xs – 24 *

Horizontal display end position
register (HDER)

HDE

hsw + xs – 19 + xw

hsw + xs – 24 + xw *

Vertical display start position register
(VDSR)

VDS

ys – 2 *

Vertical display end position register
(VDER)

VDE

ys – 2 + yw

Horizontal synchronous pulse width
register (HSWR)

HSW

hsw - 1

Horizontal scan period register
(HCR)

hc - 1

Vertical synchronous position
register (VSPR)

VSP

vc – vsw - 1

Vertical scan period register (VCR)

vc - 1

Notes: The numerical values in the above table are decimal numbers.

1. In all scan modes, VDS, VDE, VSP, VC settings are in single-field units.

2. The values of HDS and HDE are from the fourth rising edge of DCLKOUT after

detection of the falling edge of

HSYNC through the rising edge of DCLKOUT.

DCLKIN(input)

DR5－DR0(output)

DG5－DG0(output)

DB5－DB0(output)

hsw + xs

D0 D1 D2

HSYNC( input)

DCLKOUT(output)

3. VDS should be set to 1 or greater.

4. HC should be set so as to satisfy HC > HDE.