MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1678

• 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
26.4.21 ENET MAC Pointer to Receive Descriptor Ring Register
The user writes the ERDSR. It provides a pointer to the start of the circular receive buffer
descriptor queue in external memory. This pointer must be 32-bit aligned; however it is
recommended it be made 128-bit aligned (evenly divisible by 16).The user should write
bits 1 and 0 to 0. Hardware ignores non-zero values in these two bit positions.
Address:
1678
Reset
Reset
Reset
R_FSTART
Bit
Bit
Bit
W
W
W
RSRVD0
RSRVD1
RSRVD2
R
R
R
31 11
Field
9 2
1 0
10
15
31
15
0
0
0
HW_ENET_MAC_ERDSR 800F_0000h base + 180h offset = 800F_0180h
(HW_ENET_MAC_ERDSR)
14
30
14
0
0
0
RSRVD0[15:11]
Reserved bits. Write as 0.
Must be set. Not used, implemented for software compatibility.
Address of first receive FIFO location. Acts as delimiter between receive and transmit FIFOs. For proper
operation, ensure that R_FSTART is set to 0x48 or greater.
Read/write: Not used, implemented for software compatibility.
Reserved bits. Write as 0.
13
29
13
0
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
12
28
12
0
0
0
HW_ENET_MAC_FRSR field descriptions
11
27
11
0
0
0
10
26
10
1
0
0
R_DES_START[15:2]
25
0
0
0
9
9
R_DES_START[31:16]
24
1
0
0
8
8
Description
23
0
0
0
7
7
R_FSTART
22
0
0
0
6
6
21
5
0
0
5
0
20
4
0
0
4
0
Freescale Semiconductor, Inc.
19
0
0
0
3
3
18
0
0
0
2
2
17
RSRVD2
RSRVD0
0
0
0
1
1
16
0
0
0
0
0