SH7058 Datasheet, PDF (776/1130 Pages) Renesas Technology Corp – Renesas SuperHTM RISC engine

20.4 RAM Monitor Mode
20.4.1 Overview
In this mode, all the modules connected to the SH7058’s internal or external bus can be read and
written to, allowing RAM monitoring and tuning to be carried out.
20.4.2 Communication Protocol
The AUD latches the AUDATA input when AUDSYNC is asserted. The following AUDATA
input format should be used.
Input format
0000
DIR A3–A0 ^{. . . . . .} A31–A28 D3–D0 ^{. . . . . .} Dn–Dn-3
Command
Address
Data (in case of write only)
B write: n = 7
W write: n = 15
L write: n = 31
Bit 3
Bit 2
Fixed at 1 0: Read
1: Write
Bit 1 Bit 0
00: Byte
01: Word
10: Longword
Spare bits (4 bits): b'0000
Figure 20.4 AUDATA Input Format
Rev. 3.0, 09/04, page 735 of 1086