TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 111

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TX4939XBG-400

Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet

Specifications of TX4939XBG-400

Cpu Core
TX49/H4 90nm
Clock Mhz/max Mips
400/520
Inst./data Cache
32KB (4 Way)/32KB (4 Way)
Tlb
x
1cycle Mac
x
Volts (v)
1.25/2.5/3.3
Peripherals
DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
Companion Chip
TC86C001FG
Package
PGBA456

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Address
6.1. TX49 CPU Address Space
This chapter explains the address space of TX4939. Please refer to "64 bit TX System RISC TX49/H4 Core Architecture"
about the details of mapping to a physical address from the virtual address of TX49/H4 core.
Here Figure 6-1 shows the default address mapping from logical addresses to physical addresses. There are two
hardwired logical to physical translation tables exist. One is Boot Address related and the other is Internal Register related.
Detailed description follows.
Rev. 3.1 November 1, 2005
INTERNAL REGISTER
64bit:
32bit:
BOOT ADDRESS
64bit:
32bit:
0xFFFF_FF00_0000
0xFFFF_BFC0_0000
0xFF00_0000
0xBFC0_0000
Logical 32bit
Logical 32bit
Kernel Mode
Kernel Mode
0xFFFF_FFFF
0xE000_0000
0xDFFF_FFFF
0xC000_0000
0xBFFF_FFFF
0xA000_0000
0x9FFF_FFFF
0x8000_0000
0x7FFF_FFFF
0x0000_0000
Unmapped
Unmapped
Cacheable
Cacheable
Cacheable
Uncached
Uncached
0.5 GB
Mapped
0.5 GB
Mapped
0.5 GB
0.5 GB
2.0 GB
Mapped
Figure 6-1 Logical to Physical Address Translation
kseg3
ksseg
kseg1
kseg0
kuseg
uncached, unmapped
default mapping
6-1
Chapter 6. Address Mapping
Address Space
Address Space
0xF_FFFF_FFFF
0xF_E000_0000
0xF_DFFF_FFFF
0xF_C000_0000
0xF_BFFF_FFFF
0xF_A000_0000
0xF_9FFF_FFFF
0xF_8000_0000
0xF_7FFF_FFFF
0xF_6000_0000
0xF_5FFF_FFFF
0x0_C000_0000
0x0_BFFF_FFFF
0x0_A000_0000
0x0_9FFF_FFFF
0x0_8000_0000
0x0_7FFF_FFFF
0x0_6000_0000
0x0_5FFF_FFFF
0x0_4000_0000
0x0_3FFF_FFFF
0x0_2000_0000
0x0_1FFF_FFFF
0x0_0000_0000
Physical
Physical
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
0.5 GB
Toshiba RISC Processor
INTERNAL REGISTER
PHYSICAL: 0xF_FF00_0000
BOOT ADDRESS
PHYSICAL: 0x0_1FC0_0000
Rev 2.13
TX4939
6
6

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