HD66781 Datasheet, PDF (90/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
Window Address Control Instructions
Window horizontal RAM address Start/End (R210h/ R211h)
Window vertical RAM address Start/End (R212h/R213h)
R/W RS
R50 W 1
R51 W 1
R52 W 1
R53 W 1
IB15 IB14 IB13 IB12 IB11 IB10 IB9 IB8 IB7 IB6 IB5 IB4 IB3 IB2 IB1 IB0
0
0
0
0
0
0
0
0
HSA HSA HSA HSA HSA HSA HSA HSA
[7] [6] [5] [4] [3] [2] [1] [0]
0
0
0
0
0
0
0
0
HEA HEA HEA HEA HEA HEA HEA HEA
[7] [6] [5] [4] [3] [2] [1] [0]
0
0
0
0
0
0
0
VSA VSA VSA VSA VSA VSA VSA VSA VSA
[8] [7] [6] [5] [4] [3] [2] [1] [0]
0
0
0
0
0
0
0
VEA VEA VEA VEA VEA VEA VEA VEA VEA
[8] [7] [6] [5] [4] [3] [2] [1] [0]
HSA[7:0] Specify the start position of a window-address range in the horizontal direction by address.
HEA[7:0] Specify the end position of a window-address range in the horizontal direction by address. Data
are written to a rectangular area within GRAM from the address specified by HSA to the address specified
by HEA. The setting of the address is required before writing data to RAM. Make sure the address is set to
satisfy 8’h00≤ HSA< HEA ≤ 8’hEF and 8’h4≤ HEA - HSA.
VSA[7:0] Specify the start position of a window-address range in the vertical direction to access to RAM.
VEA[7:0] Specify the end position of a window-address range in the vertical direction to access to RAM.
Data are written to a rectangular area within GRAM from the address specified by VSA to the address
specified by VEA. The setting of addresses is required before writing data to RAM. Make sure the
addresses are set to satisfy 9’h000≤ VSA< VEA ≤ 9’h19F.
17’h000-00
HSA
VSA
HEA
Window
Address area
Window-address range
8'h00 ҇ HSA< HEA ҇ 8'hEF,
VE A
8'h04҇ HEA - HSA,
9'h00҇VSA < VEA ҇ 9'h19F
17’h19F-EF
GRAM address map and window-address range
Note 1) Set a window-address range within the GRAM address map.
Note 2) In the high-speed write mode, data are written to GRAM by one horizontal line. Write data to GRAM
by horizontal line unit.
Note 3) Make an address set within the window address area. In the high-speed write mode, make an
address set from the first line of the window address area.
Rev.0.5, July.31.2003, page 90 of 196