Ameba-D User Manual
User Manual All information provided in this document is subject to legal disclaimers. © REALTEK 2019. All rights reserved.
292
Bit
Name
Access
Reset
Description
31:8
RSVD
N/A
-
Reserved
7
TXDATABIT7
W
0
Tx data bit 7
6
TXDATABIT6
W
0
Tx data bit 6
5
TXDATABIT5
W
0
Tx data bit 5
4
TXDATABIT4
W
0
Tx data bit 4
3
TXDATABIT3
W
0
Tx data bit 3
2
TXDATABIT2
W
0
Tx data bit 2
1
TXDATABIT1
W
0
Tx data bit 1
0
TXDATABIT0
W
0
Tx data bit 0
Note
: Bit 0 is the least significant bit. It is the first bit serially transmitted.
14.2.11
MISCR
Name:
DMA Mode and IrDA Mode Control Register
Size:
32 bits
Address offset:
0x0028
Read/write access:
read/write
31
30
29
28
27
26
25
24
RSVD
DUMMY_FLAG
R/W1C
23
22
21
20
19
18
17
16
DUMMY_DATA
R/W
15
14
13
12
11
10
9
8
RXDMA_OWNER
IRDA_RX_INV
IRDA_ TX_INV
RXDMA_BURSTSIZE[4:0]
R/W
R/W
R/W
R/W
7
6
5
4
3
2
1
0
TXDMA_BURSTSIZE[4:0]
RXDMA_EN
TXDMA_EN
IRDA_ENABLE
R/W
R/W
R/W
R/W
Bit
Name
Access
Reset Description
31:25
RSVD
N/A
-
Reserved
24
DUMMY_FLAG
R/W1C
0
This bit is set when master reads dummy data from UART Rx FIFO, it can be cleared
by software by writing the bit.
23:16
DUMMY_DATA
R/W
0
When UART is DMA flow controller and Rx length is multiple of Rx burst size, dummy
dma_rx_last is given to GDMA when timeout happens after last burst transfer,
dummy data is the read data.
15
RXDMA_OWNER
R/W
0
1: UART is DMA flow controller for UART Rx.
0: GDMA is DMA flow controller for UART Rx.
14
IRDA_RX_INV
R/W
0
1: Invert irda_rx_i.
0: Don’t invert irda_rx_i.
13
IRDA_TX_INV
R/W
0
1: Invert irda_tx_o.
0: Don’t invert irda_tx_o.
12:8
RXDMA_BURSTSIZE[4:0] R/W
5’d4
Rx DMA burst size. The maximum value is 16.
7:3
TXDMA_BURSTSIZE[4:0]
R/W
5’d4
Tx DMA burst size. The maximum value is 16.
2
RXDMA_EN
R/W
0
1: Rx DMA is enabled (valid when DMA_MODE (FCR[3]) is 1’b1).
0: Rx DMA is disabled.
1
TXDMA_EN
R/W
0
1: Tx DMA is enabled (valid when DMA_MODE (FCR[3]) is 1’b1).
0: Tx DMA is disabled.
0
IRDA_ENABLE
R/W
0
1: UART co-works with IrDA SIR mode, which means that txd/rxd are IrDA
signals.
0: UART mode only.
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2019-05-15 10:08:03