PIC18F47J53 Datasheet, PDF (304/586 Pages) Microchip Technology – 28/44-Pin, High-Performance USB Microcontrollers with nanoWatt XLP Technology

PIC18F47J53 FAMILY
REGISTER 20-3: DMACON1: DMA CONTROL REGISTER 1 (ACCESS F88h)
R/W-0
SSCON1
bit 7
R/W-0
SSCON0
R/W-0
TXINC
R/W-0
RXINC
R/W-0
DUPLEX1
R/W-0
DUPLEX0
R/W-0
DLYINTEN
R/W-0
DMAEN
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-6
bit 5
bit 4
bit 3-2
bit 1
bit 0
SSCON<1:0>: SSDMA Output Control bits (Master modes only)
11 = SSDMA is asserted for the duration of 4 bytes; DLYINTEN is always reset low
01 = SSDMA is asserted for the duration of 2 bytes; DLYINTEN is always reset low
10 = SSDMA is asserted for the duration of 1 byte; DLYINTEN is always reset low
00 = SSDMA is not controlled by the DMA module; DLYINTEN bit is software programmable
TXINC: Transmit Address Increment Enable bit
Allows the transmit address to increment as the transfer progresses.
1 = The transmit address is to be incremented from the initial value of TXADDR<11:0>
0 = The transmit address is always set to the initial value of TXADDR<11:0>
RXINC: Receive Address Increment Enable bit
Allows the receive address to increment as the transfer progresses.
1 = The received address is to be incremented from the intial value of RXADDR<11:0>
0 = The received address is always set to the initial value of RXADDR<11:0>
DUPLEX<1:0>: Transmit/Receive Operating Mode Select bits
10 = SPI DMA operates in Full-Duplex mode, data is simultaneously transmitted and received
01 = DMA operates in Half-Duplex mode, data is transmitted only
00 = DMA operates in Half-Duplex mode, data is received only
DLYINTEN: Delay Interrupt Enable bit
Enables the interrupt to be invoked after the number of TCY cycles specified in DLYCYC<2:0> has
elapsed from the latest completed transfer.
1 = The interrupt is enabled, SSCON<1:0> must be set to ‘00’
0 = The interrupt is disabled
DMAEN: DMA Operation Start/Stop bit
This bit is set by the users’ software to start the DMA operation. It is reset back to zero by the DMA
engine when the DMA operation is completed or aborted.
1 = DMA is in session
0 = DMA is not in session
DS39964B-page 304
Preliminary
 2010 Microchip Technology Inc.