User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 506
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Bit Name Reset Access Description
Value Mode Description
3 TRIPLE Transmission of new frames are delayed by three baud periods
13 TXDMAWU 0 RW TX DMA Wakeup
Set to wake the DMA controller up when in EM2 and space is available in the transmit buffer.
Value Description
0 While in EM2, the DMA controller will not get requests about space being available in the transmit buffer
1 DMA is available in EM2 for the request about space available in the transmit buffer
12 RXDMAWU 0 RW RX DMA Wakeup
Set to wake the DMA controller up when in EM2 and data is available in the receive buffer.
Value Description
0 While in EM2, the DMA controller will not get requests about data being available in the receive buffer
1 DMA is available in EM2 for the request about data in the receive buffer
11 BIT8DV 0 RW Bit 8 Default Value
When 9-bit frames are transmitted, the default value of the 9th bit is given by BIT8DV. If TXDATA is used to write a frame, then the
value of BIT8DV is assigned to the 9th bit of the outgoing frame. If a frame is written with TXDATAX however, the default value is
overridden by the written value.
10 MPAB 0 RW Multi-Processor Address-Bit
Defines the value of the multi-processor address bit. An incoming frame with its 9th bit equal to the value of this bit marks the frame
as a multi-processor address frame.
9 MPM 0 RW Multi-Processor Mode
Set to enable multi-processor mode.
Value Description
0 The 9th bit of incoming frames have no special function
1 An incoming frame with the 9th bit equal to MPAB will be loaded into the receive buffer regardless of RXBLOCK and
will result in the MPAB interrupt flag being set
8 SFUBRX 0 RW Start-Frame UnBlock RX
Clears RXBLOCK when the start-frame is found in the incoming data. The start-frame is loaded into the receive buffer.
Value Description
0 Detected start-frames have no effect on RXBLOCK
1 When a start-frame is detected, RXBLOCK is cleared and the start-frame is loaded into the receive buffer
7 LOOPBK 0 RW Loopback Enable
Set to connect receiver to LEUn_TX instead of LEUn_RX.
Value Description
0 The receiver is connected to and receives data from LEUn_RX
1 The receiver is connected to and receives data from LEUn_TX
6 ERRSDMA 0 RW Clear RX DMA On Error
When set,RX DMA requests will be cleared on framing and parity errors.
Value Description
0 Framing and parity errors have no effect on DMA requests from the LEUART
1 RX DMA requests from the LEUART are disabled if a framing error or parity error occurs.
5 INV 0 RW Invert Input And Output
Set to invert the output on LEUn_TX and input on LEUn_RX.
Value Description
0 A high value on the input/output is 1, and a low value is 0.
1 A low value on the input/output is 0, and a high value is 0.
4 STOPBITS 0 RW Stop-Bit Mode
Determines the number of stop-bits used. Only used when transmitting data. The receiver only verifies that one stop bit is present.