TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 107
TX4939XBG-400
Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet
1.TX4939XBG-400.pdf
(740 pages)
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
Available stocks
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Price
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872
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CG
5.5. SSCG (Spread Spectrum Clock Generator)
5.5.1. SSCG UNIT
The SSCG UNIT in TX4939 modulates MSTCLK directly. This SSCG module does frequency modulation by pure digital
circuit.
5.5.2. Modulation Profile
Rev. 3.1 November 1, 2005
Modulation Magnitude = 0.5% (p-p)
Modulation Frequency = 31.25 KHz
Maximum Delay Time = 516 steps (19.09 nS)
MSTCLK
20MHz
CKIN
SSCGEN
SSCG
Figure 5-8 Location of SSCG UNIT
CKOUT
5-13
FN
BP
X 20
PLL#1
PLL#1
400 MHz
ND[4:0]
FS[0]
CN
CK
Toshiba RISC Processor
TX4939
5
5
5
5
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