Sundance Spas ST201 - Manual (Page 76)

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Sundance Technology ST201 PRELIMINARY draft 2
RXDMAPOLLPERIOD
Class....................I/O Registers, DMA
Base Address ......IoBaseAddress register value
Address Offset .....0x16
Access Mode .......Read/Write
Width ...................8 bits
The value in RxDMAPollPeriod determines the rate at which the current RFD is polled, looking for RxDMA-
Complete in ReceiveFrameStatus in RFD to be cleared. Polling is disabled when RxDMAPollPeriod is
cleared. RxDMAPollPeriod is cleared by reset. The value in RxDMAPollPeriod represents multiple of 320
ns time intervals. The maximum value is 127 (or 40.64 us).
BIT BIT NAME BIT DESCRIPTION
6..0 RxDMAPollPeriod The number of 320ns intervals between polls of the RxDMAComplete
bit in the ReceiveFrameStatus field of the current RFD.
7 Unused This bit is ignored.