mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 303

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

16.4.3
BCRn, shown in
block. The offset within the memory map is based on the value of MPARK[BCR24BIT]. BCRn
decrements on the successful completion of the address transfer of a write transfer. BCRn decrements by
1, 2, 4, or 16 for byte, word, longword, or line accesses, respectively.
Figure 16-6
Figure 16-7
DSRn[DONE], shown in
When a transfer sequence is initiated and BCRn[BCR] is not a multiple of 16, 4, or 2 when the DMA is
configured for line, longword, or word transfers, respectively, DSRn[CE] is set and no transfer occurs. See
Section 16.4.5, “DMA Status Registers
16.4.4
DCRn, shown in
available only if MPARK[BCR24BIT] is set. See
more information.
Freescale Semiconductor
Address
Reset
Address
Field
R/W
Reset
Field
R/W
Byte Count Registers (BCR0–BCR3)
DMA Control Registers (DCR0–DCR3)
15
31
shows BCRn for BCR24BIT = 1.
shows BCRn for BCR24BIT = 0.
Figure
Figure 16-6
—
—
Figure 16-6. Byte Count Registers (BCRn)—BCR24BIT = 1
Figure 16-7. Byte Count Registers (BCRn)—BCR24BIT = 0
16-8, is used for configuring the DMA controller module. Note that DCRn[AT] is
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Figure
and
24 23
16-9, is set when the block transfer is complete.
Figure
IPSBAR + 0x10C, 0x14C, 0x18C, 0x1CC
IPSBAR + 0x10C, 0x14C, 0x18C, 0x1CC
(DSR0–DSR3).”
16-7, hold the number of bytes yet to be transferred for a given
0000_0000_0000_0000
Section 8.5.3, “Bus Master Park Register
0000_0000_0000_0000_0000_0000
BCR
R/W
R/W
BCR
DMA Controller Module
(MPARK)” for
0
0
16-7