1. Overview
Rev.1.00 Jan. 10, 2008 Page 4 of 1658
REJ09B0261-0100
Item Features
Memory
management
unit (MMU)
•
4-Gbyte address space, 256 address space identifiers (8-bit ASID)
•
Supports single virtual memory mode and multiple virtual memory mode
•
Multiple page sizes: 1, 4, 8, 64, or 256 Kbytes, or 1, 4, or 64 Mbytes
•
4-entry fully associative TLB for instructions
•
64-entry fully associative TLB for instructions and operands
•
Selection of software-driven or random-counter replacement algorithms
•
The TLB is address-mapped, making its contents directly accessible.
•
29-bit physical address mode/32-bit extended mode
Cache memory
•
Instruction cache (IC)
⎯
32-Kbyte 4-way set associative
⎯
256 entries/way, 32-byte block length
•
Operand cache (OC)
⎯
32-Kbyte 4-way set associative
⎯
256 entries/way, 32-byte block length
•
Selectable write method (copy-back or write-through)
•
Store queue (32 bytes
×
2 entries)
•
One-stage copy-back buffer and one-stage write-through buffer
LRAM
•
ILRAM
⎯
8-Kbyte high-speed memory
⎯
Three independent read/write ports
⎯
8-/16-/32-/64-bit access from the CPU or FPU
⎯
8-/16-/32-/64-bit access and 16-/32-byte access in response to
external requests
⎯
Support for protection of memory from CPU or FPU access
•
OLRAM
⎯
16-Kbyte high-speed memory
⎯
Three independent read/write ports
⎯
8-/16-/32-/64-bit access by the CPU or the FPU
⎯
8-/16-/32-/64-bit access and 16-/32-byte access in response to
external requests
⎯
Support for protection of memory from CPU or FPU access
Содержание SH7781
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Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
Страница 1688: ...Appendix Rev 1 00 Jan 10 2008 Page 1658 of 1658 REJ09B0261 0100 ...
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