MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1154

• 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
14.8.51 DRAM Control Register 55 (HW_DRAM_CTL55)
This is a DRAM configuration register.
Address:
Re-
1154
set
CURRENT_BDW
Bit
W
AXI3_EN_SIZE_
R
AXI3_BDW_
AXI3_FIFO_
TYPE_REG
LT_WIDTH_
AXI3_BDW
PRIORITY
OVFLOW
31
AXI3_W_
0
RSVD4
RSVD3
RSVD2
RSVD1
RSVD2
INSTR
30 24
23 17
31 16
15 11
AXI3_
Field
14 8
Field
10 8
7 2
1 0
31
16
15
30
0
29
0
HW_DRAM_CTL55
28
AXI3_EN_SIZE_LT_WIDTH_INSTR
0
Always write zeroes to this field.
Current bandwidth usage percentage for port 3. READ-ONLY.
Always write zeroes to this field.
Port 3 behavior when bandwidth maximized.
Always write zeroes to this field.
Maximum bandwidth percentage for port 3.
Always write zeroes to this field.
Clock domain relativity between AXI port 3 and core logic.
Allow narrow instructions from AXI port 3 requestors with bit enabled.
Always write zeroes to this field.
Priority of write cmds from AXI port 3.
27
0
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
24
0
23
0
HW_DRAM_CTL54 field descriptions
HW_DRAM_CTL55 field descriptions
800E_0000h base + DCh offset = 800E_00DCh
22
0
21
0
20
0
19
0
18
0
17
0
16
0
15
0
Description
Description
14
0
RSVD2
13
0
12
0
11
0
10
PRIORITY
0
AXI3_W_
0
9
0
8
Freescale Semiconductor, Inc.
0
7
0
6
RSVD1
0
5
0
4
3
0
PRIORITY
0
2
AXI3_R_
0
1
0
0