r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 43

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

1.2
A block diagram of the SH7785 is given as figure 1.1.
Note: * The PCI bus and the display unit are not available when the local bus width is 64 bits.
DDR2-400/600
DDR2-SDRAM
PC Card/ATA3
NOR Flash
1 GB max
SRAM
ROM
The PCI controller and the display unit cannot be used when the local bus width is 64 bits.
Block Diagram
32 bit/16 bit
300 MHz
DDR bus
64*/32/16
Local bus
100 MHz
/8 bit
Figure 1.1 SH7785 Block Diagram
Superscalar CPU
32 KB O-cache
16 KB OLRAM
32 KB I-cache
DDRII-SDRAM
8 KB ILRAM
SRAM, ROM,
128 KB
URAM
Controller
SH-4A
Local Bus
Controller
PCMCIA
(DBSC)
MMU
FPU
GDTA
INTC
MPX
Super Hyway
Rev.1.00 Jan. 10, 2008 Page 13 of 1658
Periperal bus
Peripheral Bus Controller
Display Unit
PCI bus
Controller
Controller
DMA
PCI
SCIF0/HSPI/FLCTL
HAC/SSI/SIOF
SCIF2/MMCIF
TMU, WDT
HAC/SSI
33/66 MHz
32 bit
REJ09B0261-0100
Debug
CPG
1. Overview