MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 523

• Manufacturer Part Number: MCF5270CAB100
• Description: MCU V2 COLDFIRE 64K SRAM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: MCF527xr

Specifications of MCF5270CAB100

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 160-QFP
• Processor Series: MCF527x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: NNDK-MOD5272-KIT, NNDK-MOD5270-KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

28.1.2.5 Counter (CTR) Cipher Mode
In counter mode, a random 128-bit initial counter value is incremented modulo 2
processed. The modulus size can be set between 2
The running counter is encrypted and XOR’d with the plaintext to derive the ciphertext, or with
the ciphertext to recover the plaintext as shown in
Freescale Semiconductor
Cipher 1
Plain 1
IV
Figure 28-7. CTR Mode Processing
Encrypt(k)
Encrypt(k)
Counter
Counter
Cipher 1
Plain 1
Decrypt(k)
Figure 28-6. CBC Decryption
Cipher 1
MCF5271 Reference Manual, Rev. 2
Plain 1
Cipher 2
Plain 2
Cipher 2
Decrypt(k)
Plain 2
Encrypt(k)
Counter+1
Encrypt(k)
Counter+1
8
Cipher 2
Plain 2
through 2
Figure
Cipher N
28-7.
...
Plain N
...
...
128
, by powers of 8 (SKMR[CTRM]).
Decrypt(k)
Counter + N-1
Plain N
Counter + N-1
Cipher N
Encrypt(k)
Encrypt(k)
Cipher N
Plain N
n
with each block
Introduction
28-5