TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 109

• Manufacturer Part Number: TX4939XBG-400
• Manufacturer: Toshiba

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

CG
5.6.3. PCI Clock De-Skew
PCI De-Skew is performed by PLL circuit. Figure 5-11 shows this diagram and recommended PCI Clock distribution.
Rev. 3.1 November 1, 2005
PCICLK1
div 2
div 2
PCI66S
33/66 MHz
PCI Service
Figure 5-11 Structure of PCI Clock De-Skew Circuit
Clocks
5-15
PLL
PCI CG
PCICLKIN
Same timing point in terms
of PCI Clock Positive Edge
Clock
Tree
Toshiba RISC Processor
Logic
PCI
TX4939
5
5
5
5