TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 495

• 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
The block diagram of a single TX4939 Ethernet Controller is given in Figure 18-2.
Rev. 3.1 November 1, 2005
Ethernet Controller
PHY Layer
Bus Master Burst
MAC Tx
DMA Tx Block
MAC Layer
DMA Layer
Block
Bus Control Layer
Clock
MAC Tx FIFO
Figure 18-2 Ethernet Controller Block Diagram
10BASE-TPHY or 100BASE-XPHY
PCI Clock
66 MHz
SRAM
32-bit
DMA
MII <-> RMII
Status Register
PCI Controller
MAC Control
18-3
ARC
DII
BII
Rx Block
Bus Slave
DMA
Clock
MAC Rx FIFO
DMA Control Status
Flow Control
Register
PCI Config
Register
Toshiba RISC Processor
MAC Rx
Block
G-Bus
TX4939
18
18