TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 277

• 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

TMR
In Watchdog Timer mode, the TIMER[1:0] outputs remain at logic high.
Rev. 3.1 November 1, 2005
RESET* or NMI
WDIS = 1
TWIE = 1
TWIS = 0
TWC = 0
TCE = 0
Count Value
Figure 13-6 Operation Example of the Watchdog Timer Mode
TMODE = 10 (Watch Dog Timer Mode), CRE = 0 (Counter not Reset)
TWC=1
TMCPRA Reg. Compare Value
TWC=1
13-9
Write “0” to WDIS
TWC=1
TWIE = 0 : Disable WDT
Toshiba RISC Processor
Rev 1.00
TX4939
13
13