TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 341

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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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Manufacturer
Quantity
Price
Part Number:
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Manufacturer:
NSC
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TX4939XBG-400
Manufacturer:
TOSHIBA
Quantity:
10 440
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Manufacturer:
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Manufacturer:
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Quantity:
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DDR
Figure 15-7 shows an example of DDR Memory Mapping. In this example, DDR Channel 0 (CS0) is split two blocks, one
is 384 MB and the rest is 640 MB. The 384 MB portion is mapped to 0x0_0000_0000 to 0x0_17FF_FFFF. The rest is
mapped to 0x0_8000_0000 to 0x0_A7FF_FFFF and creates continuous memory space with 0x0_4000_0000 to
0x0_7FFF_FFFF memory space, which is mapped from DDR Channel 1 (CS1).
Rev. 3.1 November 1, 2005
0x0_FFFF_FFFF
0x0_C000_0000
0x0_BFFF_FFFF
0x0_8000_0000
0x0_7FFF_FFFF
0x0_4000_0000
0x0_3FFF_FFFF
0x0_2000_0000
0x0_1FFF_FFFF
0x0_1800_0000
0x0_17FF_FFFF
0x0_1000_0000
0x0_0FFF_FFFF
0x0_0800_0000
0x0_07FF_FFFF
0x0_0000_0000
TX49 & GBUS
TX49 & GBUS
BOOT CODE
BOOT CODE
128 MB
128 MB
128 MB
128 MB
1.0 GB
1.0 GB
1.0 GB
0.5 GB
Figure 15-7 Example of DDR Memory Split-Mapping
15-11
DRWINUP
DRWINLO
DRWINOF
DRWINCS
DRWINUP
DRWINLO
DRWINOF
DRWINCS
DRWINUP
DRWINLO
DRWINOF
DRWINCS
DRWINUP
DRWINLO
DRWINOF
DRWINCS
DRWIN#3 (DISABLE)
DRWIN#0 (ENABLE)
DRWIN#1 (ENABLE)
DRWIN#2 (ENABLE)
0x17FF_FFFF
0x0000_0000
0x0000_0000
0xA7FF_FFFF
0x8000_0000
0x1800_0000
0x7FFF_FFFF
0x4000_0000
0x0000_0000
0x0000_0000
0x0000_0000
0x0000_0000
0x0 (CS0)
0x0 (CS0)
0x0 (CS1)
0x0 (CS0)
Toshiba RISC Processor
0x3FFF_FFFF
0x3FFF_FFFF
0x1800_0000
0x17FF_FFFF
0x0000_0000
0x0000_0000
DDR CS0
DDR CS0
DDR CS1
DDR CS1
1.0 GB
1.0 GB
Rev 2.12
TX4939
15
15

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