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HD66760 Datasheet(PDF) 36 Page - Hitachi Semiconductor |
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HD66760 Datasheet(HTML) 36 Page - Hitachi Semiconductor |
36 / 105 page HD66760 36 Address: N set Dummy read (invalid data) GRAM -> Read-data latch Read (data of address n) Read-data latch -> DB15–0 First word Second word i) Data read to the microcomputer ii) Logical operation processing in the HD66760 Address: M set Dummy read (invalid data) GRAM -> Read-data latch Read (data of address) Read-data latch -> DB15–0 First word Second word Sets the I/D and AM bits Address: N set Dummy read (invalid data) GRAM -> Read-data latch Sets the I/D and AM bits Read (data of address n) DB15–0 -> GRAM Dummy read (invalid data) GRAM -> Read-data latch Write (data of address n) DB15–0 -> GRAM Automatic address update: N + α First word Second word First word Second word Figure 23 GRAM Read Sequence Grayscale Palette Control (R30h to R39h) RK73–00: Specify the R-grayscale level for eight palettes from the 16-grayscale level. For details, see the Grayscale Palette and Grayscale Palette Table sections. In four-grayscale display mode, the number of palettes to be used is four. For details, see the Four-grayscale Display Mode section. GK73–00: Specify the G-grayscale level for eight palettes from the 16-grayscale level. For details, see the Grayscale Palette and Grayscale Palette Table sections. In four-grayscale display mode, the number of palettes to be used is four. For details, see the Four-grayscale Display Mode section. BK33–00: Specify the B-grayscale level for four palettes from the 16-grayscale level. For details, see the Grayscale Palette and Grayscale Palette Table sections. In four-grayscale display mode, the number of palettes to be used is four. For details, see the Four-grayscale Display Mode section. |
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