NUMICRO-SDK Nuvoton Technology Corporation of America, NUMICRO-SDK Datasheet - Page 346

• Manufacturer Part Number: NUMICRO-SDK
• Description: KIT EVAUATION NUC100/120/130/140
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™r
• Type: MCUr

Specifications of NUMICRO-SDK

• Contents: Board, Cable, CD, Nu-Link
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NUC100, NUC120, NUC130, NUC140

NuMicro™ NUC100 Series Technical Reference Manual
Burst Mode
SPI controller can switch to burst mode by setting TX_NUM bit field (SPI_CNTRL[9:8]) to 0x01. In
burst mode, SPI can transmit/receive two transactions in one transfer. The SPI burst mode
waveform is showed below:
Figure 5-54 Two Transactions in One Transfer (Burst Mode)
LSB First
The LSB bit (SPI_CNTRL[10]) defines the data transmission either from LSB or MSB firstly to
start to transmit/receive data.
Transmit Edge
The TX_NEG bit (SPI_CNTRL[2]) defines the data transmitted out either at negative edge or at
positive edge of serial clock SPICLK.
Receive Edge
The Rx_NEG bit (SPI_CNTRL[1]) defines the data received in either at negative edge or at
positive edge of serial clock SPICLK.
Publication Release Date: Dec. 22, 2010
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Revision V1.06