TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 325
TX4939XBG-400
Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet
1.TX4939XBG-400.pdf
(740 pages)
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
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DMA
14.5. Timing Diagrams
This section contains timing diagrams for the external I/O DMA transfer mode. The DMAREQ[n] signals and DMAACK[n]
signals in the timing diagrams are set to Low Active.
14.5.1. External I/O Device – SRAM Dual Address Transfer
Rev. 3.1 November 1, 2005
CE* (I/O device)
CE* (SRAM)
DMADONE*
SADB [15:0]
DMAREQ[n]
DMAACK[n]
SYSCLK
SA [5:0]
ACK
Figure 14-19 Dual Address Transfer from External I/O Device to SRAM
SWE*
BWE*
ACE
OE*
*
External I/O Device – SRAM Dual Address Transfer
(4-word Burst Transfer to 16-bit Bus SRAM)
14-37
Toshiba RISC Processor
TX4939
14
14
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