MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1871

• 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

29.9.32 ENET SWI Define congestion threshold for Port0 backpressure.
If the total output queues shared memory has less than this amount of free cells available,
the switch stops serving the port0 input buffer. This will eventually fill up the input buffer
deasserting ff_tx_rdy0. A value of 0 disables the function (no backpressure).
Address:
Re-
29.9.33 ENET SWI Enable forced forwarding for a frame processed from
Enable forced forwarding for a frame processed from port 0. The forced forwarding, if
enabled, directs a frame from the processor to output port(s) ignoring any lookup resolution.
Forced forwarding for Port 0 frames (i.e. frames transmitted from the DMA0 to the port 0
of the switch).
Freescale Semiconductor, Inc.
set
Bit
W
R
MINCELLSP0
QUEUE_0
31
RSRVD0
0
QMGR_
Field
Field
31 8
4 0
7 0
30
0
29
0
HW_ENET_SWI_QMGR_MINCELLSP0 800F_8000h base + 9Ch offset = 800F_
809Ch
(HW_ENET_SWI_QMGR_MINCELLSP0)
port 0 (HW_ENET_SWI_FORCE_FWD_P0)
28
0
HW_ENET_SWI_QM_WEIGHTS field descriptions (continued)
Queue 0
Reserved bits. Write as 0.
Mininum umber of free cells required.
27
0
HW_ENET_SWI_QMGR_MINCELLSP0 field descriptions
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
24
0
23
0
22
0
21
0
RSRVD0
20
0
19
0
Chapter 29 Programmable 3-Port Ethernet Switch with QOS (SWITCH)
18
0
17
0
16
0
15
0
Description
Description
14
0
13
0
12
0
11
0
10
0
0
9
0
8
0
7
QMGR_MINCELLSP0
0
6
0
5
0
4
3
1
0
2
0
1
1871
1
0