MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1146

• 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

Programmable Registers
14.8.40 DRAM Control Register 42 (HW_DRAM_CTL42)
This is a DRAM configuration register.
Address:
Re-
14.8.41 DRAM Control Register 43 (HW_DRAM_CTL43)
This is a DRAM configuration register.
Address:
Re-
1146
set
set
Bit
Bit
W
W
R
R
OBSOLETE
TRAS_MAX
TRAS_MIN
31
31
0
0
RSVD2
31 24
31 28
27 24
23 16
TRFC
Field
23 8
Field
TRP
7 0
RSVD2
30
30
0
0
29
29
0
0
OBSOLETE
HW_DRAM_CTL42
HW_DRAM_CTL43
28
28
0
0
Always write zeroes to this field.
DRAM TRAS_MAX parameter in cycles.
Defines the DRAM maximum row active time, in cycles.
DRAM TRAS_MIN parameter in cycles.
Defines the DRAM minimum row activate time, in cycles.
Always write zeroes to this field.
DRAM TRP parameter in cycles.
Defines the DRAM pre-charge command time, in cycles.
DRAM TRFC parameter in cycles.
Defines the DRAM refresh command time, in cycles.
27
27
0
0
26
26
0
0
TRP
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
25
0
0
24
24
0
0
23
23
0
0
HW_DRAM_CTL42 field descriptions
HW_DRAM_CTL43 field descriptions
800E_0000h base + A8h offset = 800E_00A8h
800E_0000h base + ACh offset = 800E_00ACh
22
22
0
0
21
21
0
0
TRFC
20
20
0
0
19
19
0
0
18
18
0
0
17
17
0
0
TRAS_MAX
16
16
0
0
RSVD1
15
15
0
0
Description
Description
14
14
0
0
13
13
0
0
12
12
0
0
11
11
0
0
10
10
0
0
0
0
9
9
0
0
8
8
Freescale Semiconductor, Inc.
TREF
0
0
7
7
0
0
6
6
0
0
5
5
TRAS_MIN
0
0
4
4
3
0
3
0
0
0
2
2
0
0
1
1
0
0
0
0