MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 530

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX281AVM4B

• 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: Supplier Unconfirmed

Programmable Registers
7.5.13 APBX DMA Channel 1 Current Command Address Register
The APBX DMA Channel 1 current command address register points to the multiword
command that is currently being executed. Commands are threaded on the command address.
APBX DMA Channel 1 is controlled by a variable sized command structure. This register
points to the command structure currently being executed.
EXAMPLE
pCurCmd = (hw_apbx_chn_cmd_t *) HW_APBX_CHn_CURCMDAR_RD(1);
register, since there is only one field
pCurCmd = (hw_apbx_chn_cmd_t *) BF_RDn(APBX_CHn_CURCMDAR, 1, CMD_ADDR);
multi-register bitfield read macro
pCurCmd = (hw_apbx_chn_cmd_t *) HW_APBX_CHn_CURCMDAR(1).CMD_ADDR;
bitfield of indexed register's struct
Address:
Re-
530
set
Bit
W
R
AHB_BYTES
APB_BYTES
CMD_ADDR
31
0
31 16
Field
15 0
Field
31 0
30
0
29
0
(HW_APBX_CH1_CURCMDAR)
HW_APBX_CH1_CURCMDAR
28
0
This value reflects the current number of APB bytes remaining to be transfered in the current transfer.
This value reflects the current number of AHB bytes remaining to be transfered in the current transfer.
Pointer to command structure currently being processed for channel 1.
27
0
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
HW_APBX_CH1_CURCMDAR field descriptions
24
HW_APBX_CH0_DEBUG2 field descriptions
0
23
0
22
0
21
0
20
0
8002_4000h base + 170h offset = 8002_4170h
19
0
18
0
17
CMD_ADDR
0
16
0
15
0
Description
Description
14
0
13
0
12
0
11
0
10
0
0
9
0
8
Freescale Semiconductor, Inc.
0
7
// read the whole
// or, use
// or, assign from
0
6
0
5
0
4
3
0
0
2
0
1
0
0