Datasheet
1061
SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
DMA Base Address must be programmed with a value aligned onto LCD DMA burst size.
e.g.:
BRSTLN = 15
For a 16-word burst, the LCD DMA Base Address must start on 16-word offset: 0x0, 0x40, 0x80 or 0xc0.
BRSTLN = 3
For a 4-word burst, the LCD DMA Base Address must start on 0x0, 0x10, ..., 0xf0.
50.1.8.3 24-bit Packed Mode
LCD DMA Base Address and LCD DMA burst size must be selected with care in 24-bit packed mode. A 32-bit
word contains some bits of a pixel and some bits of the following pixel. If LCD DMA Base Address is not aligned
with a pixel start, the colors will be modified.
Respect “LCD periodic bad pixels” erratum constraints lead to select the LCD DMA Base Address regarding the
LCD DMA burst size.
Problem Fix/Workaround
LCD DMA Base Address is to be set on a pixel start, every three 32-bit word.
The offset of the LCD DMA Base Address must be a multiple of 0x30 plus 0x0, 0xc, 0x18 or 0x24 (0x0, 0xc, 0x18,
0x24, 0x30, 0x3c, 0x48, 0x54, 0x60, 0x6c, 0x78, 0x84, 0x90, 0x9c, 0xa8, 0xb4, 0xc0 ...).
e.g. regarding the bursts size:
1) BRSTLN = 3 implies the following LCD DMA Base Address offsets: 0x0, 0x30, 0x60, ...
2) BRSTLN = 15 implies the following LCD DMA Base Address offsets: 0x0 and 0xc0 only
50.1.9 MCI
50.1.9.1 Busy signal of R1b responses is not taken in account
The busy status of the card during the response (R1b) is ignored for the commands CMD7, CMD28, CMD29,
CMD38, CMD42, CMD56.
Additionally, for commands CMD42 and CMD56, a conflict can occur on data line 0 if the MCI sends data to the
card while the card is still busy.
The behavior is correct for CMD12 command (STOP_TRANSFER).
Problem Fix/Workaround
None
50.1.9.2 SDIO interrupt does not work with slots other than A
If there is a 1-bit data bus width on other slots than Slot A, the SDIO interrupt cannot be captured. The sample is
made on the wrong data line.
Problem Fix/Workaround
None
50.1.9.3 Data Timeout Error Flag
As the data Timeout error flag checking the Naac timing cannot rise, the MCI can be stalled waiting indefinitely the
Data start bit.
Problem Fix/Workaround
A STOP command must be sent with a software timeout.