TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 701

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TX4939XBG-400

Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet

Specifications of TX4939XBG-400

Cpu Core
TX49/H4 90nm
Clock Mhz/max Mips
400/520
Inst./data Cache
32KB (4 Way)/32KB (4 Way)
Tlb
x
1cycle Mac
x
Volts (v)
1.25/2.5/3.3
Peripherals
DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
Companion Chip
TC86C001FG
Package
PGBA456

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CRYPT
26.5. CIPHER Bi-Endian support
DMA controller supports both little endian and big endian format. For the CIPHER engine, we are assume that it only take
in little endian format.
26.5.1. Little endian
In memory, all the process data are organized in 64 bit format. The following describes the 64 bits data format for little
endian mode
In case of the byte are not align to 8 byte boundary. The next byte data will shift in at the right side of the previous data
Example:
Input Data (from memory)
Break (transfer complete)
Final Input Data (transfer to Cipher engine)
Rev. 3.1 November 1, 2005
Bits
Byte
Data1
Byte
Data2
Byte
Data3
Byte
Data4
Byte
Data5
Byte
Byte
Data1
Data2
Data3
Data4
[63:56] [55:48] [47:40] [39:32] [31:24] [23:16] [15:8]
7
7
valid
7
valid
7
x
7
valid
7
x
7
2-2
3-2
5-0
x
6
6
valid
6
valid
6
x
6
valid
6
valid
6
2-1
3-1
4-7
x
5
5
valid
5
valid
5
valid
5
valid
5
valid
5
2-0
3-0
4-6
5-6
4
4
valid
4
valid
4
valid
4
4
valid
4
1-7
2-7
4-5
5-5
valid
3
3
valid
3
valid
3
valid
3
x
3
valid
3
1-6
2-6
4-4
5-4
26-11
2
2
x
2
valid
2
valid
2
x
2
valid
2
1-5
2-5
3-5
5-3
1
1
x
1
valid
1
valid
1
x
1
valid
1
1-4
2-4
3-4
5-2
[7:0]
0
0
x
0
valid
0
valid
0
x
0
valid
0
1-3
2-3
3-3
5-1
Toshiba RISC Processor
TX4939
26
26

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