MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1716

• 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

Programmable Registers
26.4.91 ENET MAC IEEE1588 Timer Period Register
Address:
Re-
26.4.92 ENET MAC IEEE1588 Correction counter wrap around value
Address:
1716
set
Reset
Bit
W
R
ATIME_EVT_
Bit
31
W
0
PERIOD
R
Field
31 0
30
0
31
0
29
1
HW_ENET_MAC_ATIME_CORR 800F_0000h base + 410h offset = 800F_
0410h
HW_ENET_MAC_ATIME_EVT_PERIOD
800F_040Ch
(HW_ENET_MAC_ATIME_EVT_PERIOD)
Register (HW_ENET_MAC_ATIME_CORR)
28
1
30
0
Value for generating periodic events. Each time the timer has reached this time, the period event occurs
and the timer restarts.
If the increment value in ATIME_INC is given in true nanoseconds, this value is also given in true
nanoseconds.
The value should be initialized to 1000000000 (=1*109) to represent a timer wrap around of 1 second. The
increment value set in ATIME_INC should be set to the true nanoseconds of the period of clock ts_clk, hence
implementing a true 1 second counter.
27
1
HW_ENET_MAC_ATIME_EVT_PERIOD field descriptions
26
0
29
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
1
24
1
28
0
23
1
22
0
27
0
21
0
20
1
26
0
19
1
ATIME_EVT_PERIOD
18
25
0
0
17
800F_0000h base + 40Ch offset =
1
ATIME_CORR[30:16]
16
24
0
0
15
1
Description
23
14
0
1
13
0
22
12
0
0
11
1
21
0
10
0
1
9
20
0
0
8
Freescale Semiconductor, Inc.
0
7
19
0
0
6
0
5
18
0
0
4
3
0
17
0
0
2
0
1
16
0
0
0