r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 985

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Sync Method Switching Mode: When switching from master mode into TV sync mode, or from
TV sync mode into master mode, when necessary this mode should be switched into first. Even if
a transition to this mode is not made first, switching of the synchronization method is possible.
In this mode, input/output pins connected to the display unit (DU) are for input, and so pin
collision can be avoided. Also, in this mode no display operation is performed, and the internal dot
clock is stopped, so that disorder in the input dot clock has no effect on display operation.
DCLKIN
Clock
TV (sync signal generation circuit): Master
HSYNC
HSYNC VSYNC
This LSI: Slave
VSYNC
Figure 19.12 Signal Flow in TV Sync Mode
Field signal
ODDF
CDE
DR5-DR0
DG5-DG0
DB5-DB0
R,G,B
Input 2
Input 1
Output
Rev.1.00 Jan. 10, 2008 Page 955 of 1658
Switching between master
(input 2) and slave (input 1)
by CDE.
Display
19. Display Unit (DU)
REJ09B0261-0100