MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 583

• Manufacturer Part Number: MCIMX286CVM4B
• Description: IC MPU I.MX286 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX286CVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

7.5.65 APBX DMA Channel 8 Buffer Address Register
The APBX DMA Channel 8 buffer address register contains a pointer to the data buffer for
the transfer. For immediate forms, the data is taken from this register. This is a byte address
which means transfers can start on any byte boundary.
This register holds a pointer to the data buffer in system memory. After the command values
have been read into the DMA controller and the device controlled by this channel, then the
DMA transfer will begin, to or from the buffer pointed to by this register.
Address:
Re-
Freescale Semiconductor, Inc.
set
Bit
W
R
ADDRESS
31
0
COMMAND
Field
31 0
30
0
Field
1 0
29
0
(HW_APBX_CH8_BAR)
HW_APBX_CH8_BAR
28
0
Address of system memory buffer to be read or written over the AHB bus.
27
0
26
0
HW_APBX_CH8_CMD field descriptions (continued)
This bitfield indicates the type of current command:
00- NO DMA TRANSFER
01- write transfers, i.e. data sent from the APBX device (APB PIO Read) to the system memory (AHB
master write).
10- read transfer
11- reserved
0x0
0x1
0x2
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
24
NO_DMA_XFER — Perform any requested PIO word transfers but terminate command before
any DMA transfer.
DMA_WRITE — Perform any requested PIO word transfers and then perform a DMA transfer
from the peripheral for the specified number of bytes.
DMA_READ — Perform any requested PIO word transfers and then perform a DMA transfer
to the peripheral for the specified number of bytes.
0
HW_APBX_CH8_BAR field descriptions
23
0
22
0
8002_4000h base + 4B0h offset = 8002_44B0h
21
0
20
0
19
0
18
0
17
0
Chapter 7 AHB-to-APBX Bridge with DMA (APBX-Bridge-DMA)
ADDRESS
16
0
15
0
Description
Description
14
0
13
0
12
0
11
0
10
0
0
9
0
8
0
7
0
6
0
5
0
4
3
0
0
2
0
1
583
0
0