HD66773R Datasheet, PDF (72/133 Pages) Renesas Technology Corp – 262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels

HD66773R
Window Address Function
The window address function enables consecutive data write within the rectangular window-address area
on the on-chip GRAM, which is specified with horizontal address registers (start: HSA7-0, end: HEA 7-0)
and vertical address registers (start: VSA7-0, end: VEA7-0).
The address transition direction is determined with AM bits (either increment or decrement). Accordingly,
the data, including picture data, are written consecutively without taking the data wrap position into
consideration.
The window-address range must be specified within the GRAM address area. An address set must be set
within the window-address range.
[The condition of setting window-address range]
(Horizontal direction) “00”H ≤ HSA7-0 ≤ HSA7-0 ≤ “83”H
(Vertical direction) “00”H ≤ VSA7-0 ≤ VEA7-0 ≤ “AF”H
[The condition of making an address set within the window-address range]
(RAM address) HSA7-0 ≤ AD7-0 ≤ HEA7-0
VSA7-0 ≤ AD15-8 ≤ VEA7-0
Note: In high-speed RAM write mode, the lower two bits of the address must be set as follows.
ID0=0: The lower two bits of the address must be set to 11.
ID0=1: The lower two bits of the address must be set to 00.
"0000"H
GRAM address Map
"0083"H
"2010"H
"2110"H
"202F"H
212F"H
"5F10"H
"5F2F"H
"AF00"H
Window address-range specified area
HSA7-0 = "10"HޔHSE7-0 = "2F"H
VSA7-0 = "20"HޔVEA7-0 = "5F"H
"AF83"H
I/D = “1” (increment)
AM = “0” (horizontal write)
Rev.1.10, Jun.21.2003, page 72 of 133