Sundance-spas ST201 Bedienungsanleitung PDF herunterladen (Seite 76)

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.

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 144 145

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