NXP Semiconductors /LPC408x_7x /DAC /CTRL

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Interpret as CTRL

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (CLEAR_ON_ANY_WRITE_T)INT_DMA_REQ 0 (DISABLE)DBLBUF_ENA 0 (DISABLE)CNT_ENA 0 (DISABLE)DMA_ENA 0RESERVED

DMA_ENA=DISABLE, DBLBUF_ENA=DISABLE, CNT_ENA=DISABLE, INT_DMA_REQ=CLEAR_ON_ANY_WRITE_T

Description

DAC Control register. This register controls DMA and timer operation.

Fields

INT_DMA_REQ

DMA interrupt request

0 (CLEAR_ON_ANY_WRITE_T): Clear on any write to the DACR register.

1 (SET_BY_HARDWARE_WHEN): Set by hardware when the timer times out.

DBLBUF_ENA

Double buffering

0 (DISABLE): Disable

1 (ENABLE_WHEN_THIS_BI): Enable. When this bit and the CNT_ENA bit are both set, the double-buffering feature in the DACR register will be enabled. Writes to the DACR register are written to a pre-buffer and then transferred to the DACR on the next time-out of the counter.

CNT_ENA

Time-out counter operation

0 (DISABLE): Disable

1 (ENABLE): Enable

DMA_ENA

DMA access

0 (DISABLE): Disable

1 (ENABLE_DMA_BURST_RE): Enable. DMA Burst Request Input 7 is enabled for the DAC (see Table 672).

RESERVED

Reserved. Read value is undefined, only zero should be written.

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