MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 651

• Manufacturer Part Number: MK30DN512ZVLK10
• Description: ARM Microcontrollers - MCU KINETIS 512K SLCD
• Manufacturer: Freescale Semiconductor

Specifications of MK30DN512ZVLK10

• Core: ARM Cortex M4
• Processor Series: K30
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-80
• Mounting Style: SMD/SMT

Reset
30.2.3 CRC Control Register (CRC_CTRL)
This register controls the configuration and working of the CRC module. Appropriate bits
must be set before starting a new CRC calculation. A new CRC calculation is initialized
by asserting the CTRL[WAS] bit and then writing the seed into the CRC data register.
Address: CRC_CTRL is 4003_2000h base + 8h offset = 4003_2008h
Freescale Semiconductor, Inc.
Bit
W
R
Reserved
31
0
31–30
29–28
TOTR
FXOR
WAS
Field
TOT
27
26
25
30
0
29
0
28
0
Type of Transpose for Writes
These bits define the transpose configuration of the data written to the CRC data register. Refer to the
description of the transpose feature for the available transpose options.
00
01
10
11
Type of Transpose for Read
These bits identify the transpose configuration of the value read from the CRC data register. Refer to the
description of the transpose feature for the available transpose options.
00
01
10
11
This read-only field is reserved and always has the value zero.
Complement Read of CRC data register
Some CRC protocols require the final checksum to be XORed with 0xFFFFFFFF or 0xFFFF. Asserting
this bit enables "on the fly" complementing of read data.
0
1
Write CRC data register as seed
When this bit is asserted, a value written to the CRC data register is considered a seed value. When this
bit is de-asserted, a value written to the CRC data register is taken as data for CRC computation.
0
1
27
0
0
No XOR on reading.
Invert or complement the read value of the CRC data register.
Writes to the CRC data register are data values.
Writes to the CRC data register are seed values.
26
0
No transposition.
Bits in bytes are transposed; bytes are not transposed.
Both bits in bytes and bytes are transposed.
Only bytes are transposed; no bits in a byte are transposed.
No transposition.
Bits in bytes are transposed; bytes are not transposed.
Both bits in bytes and bytes are transposed.
Only bytes are transposed; no bits in a byte are transposed.
25
0
24
0
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
23
0
22
0
CRC_CTRL field descriptions
21
0
Table continues on the next page...
20
0
19
0
18
0
17
0
16
0
15
0
Description
14
0
13
0
12
0
0
Chapter 30 Cyclic redundancy check (CRC)
11
0
10
0
0
9
0
8
0
7
0
6
0
5
4
0
0
3
0
2
0
1
651
0
0