STR720 datasheet(92/401 Pages) STMICROELECTRONICS

部件名	STR720

功能描述	ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES

PDF	401 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

92 / 401 page

STR720 - DMA CONTROLLER (DMAC)

92/401

Current Source address high X (DMASoCurrHiX) (X=2,3)

Address Offset: 98h - D8h

Reset value: 0000h

DMASoCurrHiX holds the current value of the high source address pointer related to stream

X. This register is read only.

Bit 15:0 = DMASoCurrHiX[15:0]

Current Source address low X (DMASoCurrLoX) (X=2,3)

Address Offset: 9Ch - DCh

Reset value: 0000h

DMASoCurrLoX register holds the current value of the low source address pointer related to

stream X. This register is read only.

Bit 15:0 = DMASoCurrLoX[15:0]

The value in the registers (DMASoCurrLo and DMASoCurrHi) is used as an AHB address in a

source to DMA data transfer over the AHB bus. If the SoInc bit in the Control Register is set to

‘1’, the value in the Current Source Registers will be incremented as data are transferred from

a source to the DMA. The value will be incremented at the end of the address phase of the

AHB bus transfer by the transferred size value. If SoInc bit is ‘0’, the Current Source Register

will hold a same value during the whole DMA data transfer.

765432

DMASoCurrHiX

765432

DMASoCurrLoX

STR720 数据表(PDF) 92 Page - STMicroelectronics