TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 333

• 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

DDR
15.3. DDR SDRAM Interface
15.3.1. Pin Signals
Rev. 3.1 November 1, 2005
DDR SDRAM Interface Signals
Signal Name
DRA[13:0]
DRDQ[31:0]
DRDQS[3:0]
DRDM[3:0]
DRCS[1:0]*
DRVref
DRCKP,
DRCKM
DRCKOUT
DRCKREF
DRBA[1:0]
DRWE*, DRCAS*,
DRRAS*
DRCKE
I/O
Output
I/O
I/O
Output
Output
Input
Output
Output
Input
Output
Output
Output
Function
Address
This address signals are for DDR SDRAM.
Data Bus
This is a 32-bit data bus dedicated for DDR SDRAM
DDR Control Signal for each byte data
DDR Control signal for each byte data
DDR Chip Select
DDR Voltage reference input
Differential DDR Clock Source
Single-end DDR Reference Clock for deskew
DDR Clock deskew reference input
DDR Bank Address
DDR Control Signals
DDR Control Signals
Clock Enable signal
15-3
Toshiba RISC Processor
TX4939
15
15