MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 408
MCIMX286CVM4B
Manufacturer Part Number
MCIMX286CVM4B
Description
IC MPU I.MX286 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(70 pages)
2.MCIMX283DVM4B.pdf
(2 pages)
3.MCIMX283DVM4B.pdf
(2327 pages)
4.MCIMX283DVM4B.pdf
(20 pages)
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
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Programmable Registers
Address:
Re-
6.5.40 APBH DMA Channel 4 Semaphore Register
The APBH DMA Channel 4 semaphore register is used to synchronize the CPU instruction
stream and the DMA chain processing state.
Each DMA channel has an 8 bit counting semaphore that is used to synchronize between
the program stream and and the DMA chain processing. DMA processing continues until
the DMA attempts to decrement a semaphore that has already reached a value of zero. When
the attempt is made, the DMA channel is stalled until software increments the semaphore
count.
EXAMPLE
BF_WR(APBH_CHn_SEMA, 0, INCREMENT_SEMA, 2);
current_sema = BF_RD(APBH_CHn_SEMA, 0, PHORE);
Address:
Re-
408
set
set
Bit
Bit
W
W
R
R
ADDRESS
31
31
0
0
PHORE
RSVD2
31 24
23 16
Field
31 0
Field
30
30
0
0
29
29
0
0
(HW_APBH_CH4_SEMA)
HW_APBH_CH4_BAR
HW_APBH_CH4_SEMA
RSVD2
28
28
0
0
Address of system memory buffer to be read or written over the AHB bus.
Reserved, always set to zero.
This read-only field shows the current (instantaneous) value of the semaphore counter.
27
27
0
0
26
26
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
25
0
0
24
24
0
0
HW_APBH_CH4_SEMA field descriptions
HW_APBH_CH4_BAR field descriptions
23
23
0
0
22
22
0
0
8000_4000h base + 2F0h offset = 8000_42F0h
8000_4000h base + 300h offset = 8000_4300h
21
21
0
0
PHORE
20
20
0
0
19
19
0
0
18
18
0
0
17
17
0
0
ADDRESS
16
16
0
0
// increment semaphore by two
// get instantaneous value
15
15
0
0
Description
Description
14
14
0
0
13
13
0
0
RSVD1
12
12
0
0
11
11
0
0
10
10
0
0
0
0
9
9
0
0
8
8
Freescale Semiconductor, Inc.
0
0
7
7
INCREMENT_SEMA
0
0
6
6
0
0
5
5
0
0
4
4
3
0
3
0
0
0
2
2
0
0
1
1
0
0
0
0
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