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TMPR4951B Datasheet(PDF) 5 Page - Toshiba Semiconductor |
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TMPR4951B Datasheet(HTML) 5 Page - Toshiba Semiconductor |
5 / 256 page Table of Contents i Table of Contents Handling Precautions TMPR4951B 1. Introduction ............................................................................................................................................................ 1-1 1.1 Overview........................................................................................................................................................ 1-1 1.2 Notation used in this manual.......................................................................................................................... 1-1 1.2.1 Numerical notation ................................................................................................................................ 1-1 1.2.2 Data notation ......................................................................................................................................... 1-1 1.2.3 Signal notation....................................................................................................................................... 1-1 1.2.4 Register notation ................................................................................................................................... 1-1 2. Features ............................................................................................................................................................... 2-1 2.1 Block Diagram ............................................................................................................................................... 2-2 2.2 Pin Description............................................................................................................................................... 2-3 2.2.1 TX4951B pin out (100-pin LQFP) ........................................................................................................ 2-3 3. TX49/L3 Core’s Registers ...................................................................................................................................... 3-1 3.1 CPU Registers................................................................................................................................................ 3-1 3.2 CP0 Registers................................................................................................................................................. 3-2 3.2.1 Index register (Reg #0)........................................................................................................................... 3-3 3.2.2 Random register (Reg #1) ...................................................................................................................... 3-4 3.2.3 EntryLo0 register (Reg#2) and EntryLo1 register (Reg#3)................................................................... 3-5 3.2.4 Context register (Reg#4) ....................................................................................................................... 3-6 3.2.5 PageMask Register (Reg#5) .................................................................................................................. 3-7 3.2.6 Wired Register (Reg #6)......................................................................................................................... 3-8 3.2.7 BadVAddr Register (Reg #8).................................................................................................................. 3-9 3.2.8 Count Register (Reg #9)....................................................................................................................... 3-10 3.2.9 EntryHi Register (Reg #10).................................................................................................................. 3-11 3.2.10 Compare Register (Reg #11) ................................................................................................................ 3-12 3.2.11 Status Register (Reg#12) ..................................................................................................................... 3-13 3.2.12 Cause Register (Reg#13)..................................................................................................................... 3-16 3.2.13 EPC Register (Reg#14) ....................................................................................................................... 3-17 3.2.14 PRId Register (Reg #15) ...................................................................................................................... 3-18 3.2.15 Config Register (Reg #16) ................................................................................................................... 3-19 3.2.16 LLAddr Register (Reg #17).................................................................................................................. 3-21 3.2.17 XContext Register (Reg #20) ............................................................................................................... 3-22 3.2.18 Debug Register (Reg #23).................................................................................................................... 3-23 3.2.19 DEPC Register (Reg#24) .................................................................................................................... 3-25 3.2.20 TagLo Register (Reg#28) and TagHi Register (Reg#29)..................................................................... 3-26 3.2.21 ErrorEPC Register (Reg#30) ............................................................................................................... 3-27 3.2.22 DESAVE Register (Reg #31) ............................................................................................................... 3-28 4. Memory Management System ................................................................................................................................ 4-1 4.1 Address Space Overview ............................................................................................................................... 4-1 4.1.1 Virtual Address Space ........................................................................................................................... 4-1 4.1.2 Physical Address Space ......................................................................................................................... 4-2 4.1.3 Virtual-to-Physical Address Translation ................................................................................................ 4-2 4.1.4 32-bit Mode Address Translation .......................................................................................................... 4-3 4.1.5 64-bit Mode Address Translation .......................................................................................................... 4-4 4.2 Operating Modes............................................................................................................................................ 4-5 4.2.1 User Mode Operations........................................................................................................................... 4-5 4.2.2 Supervisor Mode Operations................................................................................................................. 4-7 4.2.3 Kernel Mode Operations ....................................................................................................................... 4-9 4.3 Translation Lookaside Buffer....................................................................................................................... 4-16 |
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