參數(shù)資料
型號(hào)： MPC8544VTARJ
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 533 MHz, MICROPROCESSOR, PBGA783
封裝： 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, FC-PBGA-783
文件頁(yè)數(shù)： 32/112頁(yè)
文件大小： 1294K
代理商： MPC8544VTARJ
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 0
26
Freescale Semiconductor
Enhanced Three-Speed Ethernet (eTSEC), MII Management
8.2
SGMII Interface Electrical Characteristics
Each SGMII port features a 4-wire AC-coupled serial link from the dedicated SerDes 2 interface of
MPC8544E as shown in Figure 7, where CTX is the external (on board) AC-coupled capacitor. Each output
pin of the SerDes transmitter differential pair features 50-
Ω output impedance. Each input of the SerDes
receiver differential pair features 50-
Ω on-die termination to SGND_SRDS2 (xcorevss). The reference
circuit of the SerDes transmitter and receiver is shown in Figure 7.
When an eTSEC port is configured to operate in SGMII mode, the parallel interface’s output signals of
this eTSEC port can be left floating. The input signals should be terminated based on the guidelines
described in Section 21.5, “Connection Recommendations,” as long as such termination does not violate
the desired POR configuration requirement on these pins, if applicable.
When operating in SGMII mode, the eTSEC EC_GTX_CLK125 clock is not required for this port. Instead,
SerDes reference clock is required on SD2_REF_CLK and SD2_REF_CLK pins.
Input low current (VIN = GND)
IIL
–600
—
μA3
Notes:
1. LVDD supports eTSEC1.
2. TVDD supports eTSEC3.
3. The symbol VIN, in this case, represents the LVIN and TVIN symbols referenced in Table 1 and Table 2.
Table 23. GMII, MII, RMII, 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
Output high voltage (LVDD/TVDD = Min, IOH = –1.0 mA)
VOH
2.0
—
V
Output low voltage (LVDD/TVDD = Min, IOL = 1.0 mA)
VOL
—0.4
V
Input high voltage
VIH
1.70
—
V
Input low voltage
VIL
—0.7
V
Input current (VIN = 0, VIN = LVDD, VIN = TVDD)IIN
—±15
μA
1, 2, 3
Notes:
1. LVDD supports eTSEC1.
2. TVDD supports eTSEC3.
3. The symbol VIN, in this case, represents the LVIN and TVIN symbols referenced in Table 1 and Table 2.
Table 22. GMII, MII, TBI, RGMII, RTBI, RMII, and FIFO DC Electrical Characteristics (continued)
Parameter
Symbol
Min
Max
Unit
Notes
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