MPC180LMB Freescale Semiconductor, MPC180LMB Datasheet - Page 36

• Manufacturer Part Number: MPC180LMB
• Description: IC SECURITY PROCES 66MHZ 100LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MPC180LMB

• Processor Type: Security Processor
• Speed: 66MHz
• Voltage: 1.8V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Operational Registers
4.1.1 DEU Control Register (DCR)
The control register, shown in Figure 4-1, contains static bits that define the encryption
mode of operation for the DEU. This is typically written along with the keys and
initialization vector at the start of each new encryption process. All unused bits of DCR
are read as 0 values.
Table 4-2 describes control register fields.
4.1.2 DEU Configuration Register (DCFG)
The configuration register contains two bits that are set only during hardware initialization.
All unused bits of DCFG are read as 0 values.
4-2
0–28
Bits
Reset
Reset
29
30
31
Field
Addr
Field
Addr
R/W
R/W
0
0
MODE
Name
XDES
E/D
—
Reserved, should be cleared.
Selects the DES mode of operation. Both Electronic Code Book (ECB) and Cipher Block
Chaining (CBC) are supported.
0 = ECB
1 = CBC
Controls single DES or triple DES.
0 = Single DES
1 = Triple DES
Controls whether the input data will be encrypted or decrypted.
0 = decrypt
1 = encrypt
Figure 4-2. DEU Configuration Register (DCFG)
Figure 4-1. DES Control Register (DCR)
Freescale Semiconductor, Inc.
MPC180LMB Security Processor User’s Manual
For More Information On This Product,
Table 4-2. DCR Field Descriptions
Go to: www.freescale.com
—
R
0000_0000_0000_0000
0000_0000_0000_0000
—
R
0x20E
0x200
Description
28
MODE XDES
29
29
R/W
RST
W
30
30
IMSK
R/W
E/D
31
31