TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 468

• 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

ATA100
17.3.3.5. Lower Burst Count Register (C30h)
This register sets the lower order of the Burst transfer word count for when this controller becomes the Bus Master and
transfers data. This register sets the maximum word count of data that can be transferred in a single Burst transfer.
The value must be set more than 4.
17.3.3.6. Upper Burst Count Register (C38h)
This register sets the upper order of the Burst transfer word count for when this controller becomes the Bus Master and
transfers data.
Rev. 3.1 November 1, 2005
Bit 15
Bit 15
Bit 7
Bit 7
R/W
R/W
R/W
R/W
0
0
0
0
Bit 14
Bit 14
Bit 6
Bit 6
R/W
R/W
R/W
R/W
0
0
0
0
Bit 13
Bit 13
Bit 5
Bit 5
R/W
R/W
R/W
R/W
0
0
Figure 17-10 Lower Burst Count Register
0
0
Figure 17-11 Upper Burst Count Register
Bit 12
Bit 12
Bit 4
Bit 4
R/W
R/W
R/W
R/W
Burst Count[31:24]
Burst Count[23:16]
Burst Count[15:8]
0
0
0
0
Burst Count[7:0]
17-14
Bit 11
Bit 11
Bit 3
Bit 3
R/W
R/W
R/W
R/W
0
0
0
0
Bit 10
Bit 10
Bit 2
Bit 2
R/W
R/W
R/W
R/W
0
0
0
0
Toshiba RISC Processor
Bit 9
Bit 1
Bit 9
Bit 1
R/W
R/W
R/W
R/W
0
0
0
0
Bit 8
Bit 0
Bit 8
Bit 0
R/W
R/W
R/W
R/W
0
0
0
0
TX4939
17
17