MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1131

• 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

14.8.26 DRAM Control Register 28 (HW_DRAM_CTL28)
This is a DRAM configuration register.
Address:
Freescale Semiconductor, Inc.
Reset
Reset
RW_SAME_EN
Q_FULLNESS
AGE_COUNT
Bit
Bit
W
W
R
R
RSVD1
RSVD4
RSVD3
31 27
26 24
23 20
19 16
Field
Field
7 1
0
31
15
0
0
HW_DRAM_CTL28
30
14
0
0
RSVD2
'b0 = Disabled
'b1 = Enabled
Always write zeroes to this field.
Enable read/write grouping for cmd queue placement logic.
Enables read/write grouping as a condition when using the placement logic to fill the command queue.
'b0 = Disabled
'b1 = Enabled
Always write zeroes to this field.
Quantity that determines cmd queue full.
Defines quantity of data that will be considered full for the command queue.
Always write zeroes to this field.
Initial value of master aging-rate counter for cmd aging.
Holds the initial value of the master aging-rate counter. When using the placement logic to fill the command
queue, the command aging counters will be decremented one each time the master aging-rate counter
counts down age_count cycles.
RSVD4
29
13
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_DRAM_CTL27 field descriptions (continued)
28
12
0
0
800E_0000h base + 70h offset = 800E_0070h
HW_DRAM_CTL28 field descriptions
27
11
COMMAND_AGE_COUNT
0
0
26
10
0
0
Q_FULLNESS
25
0
0
9
24
0
0
8
Description
Description
23
0
0
7
22
0
0
6
RSVD3
Chapter 14 External Memory Interface (EMI)
21
0
5
0
RSVD1
20
0
4
0
19
0
0
3
AGE_COUNT
18
0
0
2
17
0
0
1
1131
16
0
0
0