TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 736
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TX4939XBG-400
Manufacturer:
NSC
Quantity:
872
Company:
Part Number:
TX4939XBG-400
Manufacturer:
TOSHIBA
Quantity:
10 440
Part Number:
TX4939XBG-400
Manufacturer:
TOSHIBA/东芝
Quantity:
20 000
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Electrical
28.4.9. Ethernet Interface (RMII) AC characteristics
Rev. 3.1 November 1, 2005
E*REF_CLK
E*RXD[1:0]
E*RXDV
E*REF_CLK
E*TXD[1:0]
E*TXEN
E*REF_CLK Cycle Time
E*REF_CLK High Time
E*REF_CLK Low Time
E*MDC Cycle Time
E*MDC High Time
E*MDC Low Time
Reception Data Setup Time
Reception Data Hold Time
Transmission Data Setup Time
Transmission Data Hold Time
Transmission Data Output
Delay Time
E*MDIO Output Delay Time
E*MDIO Setup Time
E*MDIO Hold Time
(Tc = 0 - 85°C, VDD33 = 3.3 V ± 0.2 V, VDD25 = 2.5 V ± 0.2 V, VDDC = 1.25 V ± 0.062 V, VSS = 0 V)
Item
Figure 28-19 Ethernet Interface Signal Transmission
Figure 28-18 Ethernet Interface Signal Reception
t
t
t
t
t
t
t
t
-
-
t
t
t
t
CYC_REF_CLK
HIGH_REF_CLK
LOW_REF_CLK
CYC_MDC
HIGH_MDC
LOW_MDC
SU_RX
HO_RX
val_TX
val_MDIO
SU_MDIO
HO_MDIO
Ethernet Interface Signal Transmission
t
t
LOW_REF_CLK
LOW_REF_CLK
Ethernet Interface Signal Reception
Symbol
t
SU_RX
Typical period = 20ns
⎯
⎯
⎯
⎯
⎯
E*REF_CLK reference
E*REF_CLK reference
E*REF_CLK reference
E*REF_CLK reference
E*TXCLK reference
CL=50 pF
E*MDC reference
CL=50 pF
E*MDC reference
E*MDC reference
28-20
t
t
VAL_TX
HO_RX
t
t
Conditions
HIGH_REF_CLK
HIGH_REF_CLK
t
t
CYC_REF_CLK
CYC_REF_CLK
Valid
t
t
424 (TBD)
212 (TBD)
212 (TBD)
124 (TBD)
LOW_REF_CLK
LOW_REF_CLK
10 (TBD)
0 (TBD)
7 (TBD)
7 (TBD)
4 (TBD)
2 (TBD)
4 (TBD)
2 (TBD)
0 (TBD)
Min.
⎯
Toshiba RISC Processor
300 (TBD)
10 (TBD)
Max.
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TX4939
28
28
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