MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1018
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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Programming DCP Functions
<code>
typedef struct _dcp_descriptor
{
}
</code>
13.2.7.2 Basic Hash Operation Programming Example
To perform a basic hash operation, only a single descriptor is required. The DCP simply
reads data from the source buffer and computes the hash value on the contents. This process
is illustrated below.
1018
DCP_DESCRIPTOR dcp1;
u32 *srcbuffer, *dstbuffer;
// set up control packet
dcp1.next = 0;
dcp1.ctrl0.U = 0;
dcp1.ctrl0.B.ENABLE_MEMCOPY = 1; // enable memcopy
dcp1.ctrl0.B.DECR_SEMAPHORE = 1; // decrement semaphore
dcp1.ctrl0.B.INTERRUPT = 1;
dcp1.ctrl1.U = 0;
dcp1.src = srcbuffer;
dcp1.dst = dstbuffer;
dcp1.buf_size = 512;
dcp1.payload = NULL;
dcp1.status = 0;
// Enable channel 0
HW_DCP_CHnCMDPTR_WR(0, dcp1);
HW_DCP_CHnSEMA_WR(0, 1);
// now wait for interrupt or poll
// polling code
while ( (HW_DCP_STAT_RD() & 0x01) == 0x00 );
// now check/clear channel status
if ( (HW_DCP_CHnSTAT_RD(0) & 0xFF) != 0 ) {
}
// clear interrupt register
HW_DCP_STAT_CLR(1);
DCP_DESCRIPTOR;
u32
hw_dcp_packet1_t
hw_dcp_packet2_t
u32
// an error occurred
HW_DCP_CHnSTAT_CLR(0, 0xff);
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
*next;
*src,
*dst,
*payload,
ctrl0;
ctrl1;
buf_size,
stat;
// single packet in chain
// clear ctrl0 field
// interrupt
// clear ctrl1
// source buffer
// destination buffer
// 512 bytes
// not required
// clear status
// write packet address to pointer register
// increment semaphore by 1
Freescale Semiconductor, Inc.
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