TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 493

• 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

EMAC
18.1. Features
TX4939 Ethernet MAC has the following characteristics,
Rev. 3.1 November 1, 2005
Selectable 1 or 2 Ethernet channels.
Each Ethernet channel resides as a unique PCI device on an internal 32 bit 66 MHz PCI bus.
Supports transfer rates of 100 Mbps and 10 Mbps per Ethernet channel.
Equivalent to the TC35815CF except Reduced Media Independent Interface (RMII).
Employs the IEEE Std 802.3 standard CSMA/CD format when in the half duplex transfer mode.
Employs IEEE Std 802.3x standard MAC control and Pause operation for flow control when in the full duplex
transfer mode.
Has RMII(Reduced Media Independent Interface)
Chapter 18. Dual Ethernet MAC Controller
18-1
Toshiba RISC Processor
TX4939
18
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