SH7763 Datasheet, PDF (379/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 10 SuperHyway Bus Bridge (SBR)
Section 10 SuperHyway Bus Bridge (SBR)
The SuperHyway bus bridge (SBR) performs access protocol conversion between the
SuperHyway (Shwy) bus and the SuperHyway bridge bus. At the same time, it also arbitrates
between the accesses to the SuperHyway bus by the three peripheral modules (SECURITY,
GETHER, and USBH) connected to the SuperHyway bridge bus.
10.1 Features
• SuperHyway bus interface
Performs access protocol conversion between the SuperHyway bus and the SuperHyway
bridge bus.
• Arbitration
The arbiter arbitrates between the accesses to the SuperHyway bus by the SECURITY,
GETHER, and USBH modules connected to the SuperHyway bridge bus. Priority can be set
for the individual modules or ports.
Figure 10.1 shows a block diagram of the SBR.
SuperHyway (SHwy) bus
SHwy bus interface controller
Arbitor
SHwy bus bridge
(SBR)
SuperHyway bridge bus
SECURITY
GETHER0
GETHER1
Figure 10.1 SBR Block Diagram
USBH
LMMS4AA0_010620040500
Rev. 1.00 Oct. 01, 2007 Page 313 of 1956
REJ09B0256-0100