MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1221

• 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

14.8.162 DRAM Control Register 173 (HW_DRAM_CTL173)
This is a DRAM configuration register.
Freescale Semiconductor, Inc.
Reset
CONCURRENTAP_
PER_AREF_EN
RESYNC_DLL_
RESYNC_DLL
CKE_STATUS
Bit
W
R
WR_ONLY
RSVD4
RSVD3
RSVD2
RSVD1
31 25
23 17
Field
15 9
7 1
24
16
15
8
0
0
14
0
Always write zeroes to this field.
Enables automatic DLL resyncs after every refresh.
Enables an automatic re-synchronization of the DLL after every refresh.
Always write zeroes to this field.
Initiate a DLL resync. WRITE-ONLY
Initiates a re-synchronization of the DLL. This parameter is write-only.
Always write zeroes to this field.
Limit concurrent auto-precharge by waiting for the write recovery time, tWR, before issuing a read.
Limit concurrent auto-precharge by waiting for the write recovery time, tWR, to complete after a write
before issuing a read.
'b0 = Do not restrict concurrent auto-precharge.
'b1 = Wait tWR after a write before issuing a read.
Always write zeroes to this field.
Register access to cke_status signal. This value also indicates the inverted state of the CKE pin on the
external memory bus. READ-ONLY
Provides the value of the cke_status signal in a parameter. This parameter is read-only.
13
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
RSVD2
12
0
HW_DRAM_CTL172 field descriptions
11
0
10
0
0
9
0
8
Description
0
7
0
6
Chapter 14 External Memory Interface (EMI)
5
0
RSVD1
4
0
0
3
0
2
0
1
1221
0
0