參數(shù)資料
型號(hào)： MC8641HX1500KB
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023
封裝： 33 X 33 MM, CERAMIC, BGA-1023
文件頁數(shù)： 55/130頁
文件大小： 1493K
代理商： MC8641HX1500KB
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
30
Freescale Semiconductor
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
8.2
FIFO, GMII, MII, TBI, RGMII, RMII, and RTBI AC Timing
Specifications
The AC timing specifications for FIFO, GMII, MII, TBI, RGMII, RMII and RTBI are presented in this
section.
8.2.1
FIFO AC Specifications
The basis for the AC specifications for the eTSEC’s FIFO modes is the double data rate RGMII and RTBI
specifications, since they have similar performance and are described in a source-synchronous fashion like
FIFO modes. However, the FIFO interface provides deliberate skew between the transmitted data and
source clock in GMII fashion.
When the eTSEC is configured for FIFO modes, all clocks are supplied from external sources to the
relevant eTSEC interface. That is, the transmit clock must be applied to the eTSECn’s TSECn_TX_CLK,
while the receive clock must be applied to pin TSECn_RX_CLK. The eTSEC internally uses the transmit
Input low current
(VIN = GND)
IIL
–600
—
μA
Notes:
1 LV
DD supports eTSECs 1 and 2.
2 TV
DD supports eTSECs 3 and 4.
3 The symbol V
IN, in this case, represents the LVIN and TVIN symbols referenced in Table 1 and Table 2.
Table 25. GMII, RGMII, RTBI, TBI and FIFO DC Electrical Characteristics
Parameters
Symbol
Min
Max
Unit
Notes
Supply voltage 2.5 V
LVDD/TVDD
2.375
2.625
V
1,2
1 LV
DD supports eTSECs 1 and 2.
2 TV
DD supports eTSECs 3 and 4.
Output high voltage
(LVDD/TVDD = Min, IOH = –1.0 mA)
VOH
2.00
—
V
—
Output low voltage
(LVDD/TVDD = Min, IOL = 1.0 mA)
VOL
—0.40
V
—
Input high voltage
VIH
1.70
—
V
—
Input low voltage
VIL
—0.90
V
—
Input high current
(VIN = LVDD, VIN = TVDD)
IIH
—10
μA
3 Note that the symbol V
IN, in this case, represents the LVIN and TVIN symbols referenced in Table 1 and Table 2.
Input low current
(VIN = GND)
IIL
–15
—
μA
Note:
Table 24. GMII, MII, RMII, TBI and FIFO DC Electrical Characteristics (continued)
Parameter
Symbol
Min
Max
Unit
Notes
相關(guān)PDF資料
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MC8641DHX1250HB 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023
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