SH7670 datasheet(36/1292 Pages) RENESAS

36 / 1292 page

Section 1 Overview

Rev. 1.00 Nov. 14, 2007 Page 10 of 1262

REJ09B0437-0100

Classification

Module/Function Description

Encryption

functions (AES,

DES and 3DES)

(SH7671 and

SH7670 support

only DMAC

function. They do

not support

encryption

function.)

• Encryption/decryption engine can be activated by 2-

channel dedicated DMAC (A-DMAC) or CPU

• By reading the descriptor using the A-DMAC, continuous

encryption/decryption available by switching the source

address (unprocessed data pointer), destination address

(processed data storage address), and various settings

(including encryption/decryption algorithm,

encryption/decryption, ECB/CBC/OFB, keys, and IV) in

real time

• Block-by-block encryption and decryption enabled by

activation from the CPU

Message

authentication

code generating

functions (HMAC-

SHA-1, HMAC-

SHA-224, and

HMAC-SHA-256)

(Not supported in

SH7671 and

SH7670)

• By reading the descriptor using the A-DMAC, generation

of message authentication codes and checksum

calculation in conjunction with encryption/decryption

processing are available

Encryption,

hash, and error

correction

Forward error

correction (FEC)

• By reading the descriptor using the dedicated F-DMAC,

missing packets can be restored quickly by switching the

source address (read packet pointer), destination address

(restoration packet storage address), and packet size in

real time

• Arbitrary values can be used for the read packet pointer,

read packet count, restoration packet storage address,

and packet size

User break

controller (UBC)

• Two break channels

• Addresses, data values, type of access, and data size

can be set as break conditions

Debugging

function

User debugging

interface (H-UDI)

• Supports E10A emulator

• JTAG-standard pin assignment

• Supports boundary scan

I/O ports

• Eighty-six general input/output pins and eight general

input pins

• Input or output of I/O ports can be selected for each bit

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