MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1375

• 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

19.4.10 Entropy Register (HW_DIGCTL_ENTROPY)
The Entropy register is a read-only test value register.
EXAMPLE
Address:
Re-
Freescale Semiconductor, Inc.
set
Bit
W
R
CACHE_BIST_
DMA1_BIST_
DMA0_BIST_
ENET_BIST_
USB1_BIST_
USB0_BIST_
DCP_BIST_
CAN_BIST_
31
0
DONE
DONE
DONE
DONE
DONE
DONE
DONE
DONE
Field
30
7
6
5
4
3
2
1
0
0
29
0
HW_DIGCTL_ENTROPY
28
0
This read-only bit is a 1 if the DCP BIST test has completed.
This read-only bit is a 1 if the ENET BIST test has completed.
This read-only bit is a 1 if the USB1 BIST test has completed.
This read-only bit is a 1 if the USB0 BIST test has completed.
This read-only bit is a 1 if the DMA1 BIST test has completed.
This read-only bit is a 1 if the DMA0 BIST test has completed.
This read-only bit is a 1 if the CACHE BIST test has completed.
This read-only bit is a 1 if the CAN BIST test has completed.
27
0
HW_DIGCTL_BIST_STATUS field descriptions (continued)
while(HW_DIGCTL_STATUS.PSWITCH != 0)
{
}
HW_DIGCTL_WRITEONCE.BITS = rand(HW_DIGCTL_ENTROPY.VALUE);
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
//wait for pswitch to go away
25
0
24
0
23
0
22
0
21
8001_C000h base + 90h offset = 8001_C090h
0
20
0
19
0
18
0
17
0
VALUE
16
0
15
0
Description
Chapter 19 Digital Control (DIGCTL) and On-Chip RAM
14
0
13
0
12
0
11
0
10
0
0
9
0
8
0
7
0
6
0
5
0
4
3
0
0
2
0
1
1375
0
0