MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 526

• 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
hw_apbx_chn_bar_t
dma_data.ADDRESS = (reg32_t) pDataBuffer;
Address:
Re-
7.5.10 APBX DMA Channel 0 Semaphore Register
The APBX DMA Channel 0 semaphore register is used to synchronize between the CPU
instruction stream and the DMA chain processing state.
Each DMA channel has an 8 bit counting semaphore used to synchronize between the
program stream and the DMA chain processing. DMA processing continues until the DMA
attempts to decrement a semaphore which 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(APBX_CHn_SEMA, 0, INCREMENT_SEMA, 2);
current_sema = BF_RD(APBX_CHn_SEMA, 0, PHORE);
Address:
Re-
526
set
set
Bit
Bit
W
W
R
R
ADDRESS
31
31
0
0
RSVD2
31 24
Field
31 0
Field
30
30
0
0
29
29
0
0
(HW_APBX_CH0_SEMA)
HW_APBX_CH0_BAR
HW_APBX_CH0_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.
27
27
0
0
26
26
0
0
dma_data;
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
25
0
0
24
24
0
0
HW_APBX_CH0_SEMA field descriptions
HW_APBX_CH0_BAR field descriptions
23
23
0
0
22
22
0
0
8002_4000h base + 130h offset = 8002_4130h
8002_4000h base + 140h offset = 8002_4140h
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