Ameba-D User Manual
User Manual All information provided in this document is subject to legal disclaimers. © REALTEK 2019. All rights reserved.
440
15:12
RSVD
N/A
0
Reserved
11:0
IMAGEWIDTH
R/W
0xF0
The width of image (X-channel based)
For LCD, it means pixel number per line.
For LED, it means LED dot number per line.
For LED mode, the width must be the multiple of 8.
Note
: In MCU and LED I/F mode, the image size must be not less than 32. (IMAGEHEIGHT x IMAGEWIDTH >= 32)
20.3.1.3
LCDC_UNDFLW_CFG
Name
: LCDC underflow configuration register
Size:
32 bits
Address offset:
0x0008
Read/write access:
read/write
This register defines the underflow color in the format of RGB output. The underflow color is used when DMA FIFO under flow happens. The
reset value of 0x00000000 defines a transparent black color.
Note
: If a fake pixel value has been send out during underflow, the true pixel data drops. There is an underflow pixel counter to realize this.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RSVD
DMAUNMODE
RSVD
R/W
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ERROUTDATA
R/W
Bit
Name
Access
Reset
Description
31:26
RSVD
N/A
0
Reserved
25
DMAUNMODE
R/W
0
0: Output last data
1: Output ERROUTDATA
24:16
RSVD
N/A
0
Reserved
15:0
ERROUTDATA
R/W
0
Output data when DMA FIFO underflow occurred. (directly mapping to output
D[15:0])
Note
: When DMA under flow happens in LED I/F mode, the least bit of this field is
used as the error data.
20.3.1.4
LCDC_DMA_MODE_CFG
Name
: LCDC DMA mode configuration register
Size:
32 bits
Address offset:
0x000C
Read/write access:
read/write
This register is used to configure DMA mode parameters.
31
30
29
…
10
9
8
DMAINTV
RO
7
6
5
4
3
2
1
0
RSVD
RDOTST
TRIGER_ONETIME
DMA_TRIGER_MODE
R/W
R/W/AC
R/W
Bit
Name
Access
Reset
Description
31:8
DMAINTV
RO
0
The interval cycle count between two DMA requests. (for debug)
Unit: bus clock cycle.
7:5
RSVD
N/A
0
Reserved
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2019-05-15 10:08:03