Datasheet

20.10.2 Block Transfer Count
Name: BTCNT
Offset: 0x02
Property: -
The BTCNT register offset is relative to (BASEADDR or WRBADDR) + Channel Number * 0x10
Bit 15 14 13 12 11 10 9 8
BTCNT[15:8]
Access
Reset
Bit 7 6 5 4 3 2 1 0
BTCNT[7:0]
Access
Reset
Bits 15:0 – BTCNT[15:0] Block Transfer Count
This bit group holds the 16-bit block transfer count.
During a transfer, the internal counter value is decremented by one after each beat transfer. The internal
counter is written to the corresponding write-back memory section for the DMA channel when the DMA
channel loses priority, is suspended or gets disabled. The DMA channel can be disabled by a complete
transfer, a transfer error or by software.
SAM D21 Family
DMAC – Direct Memory Access Controller
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 361