MPC8541CPXAJD View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
MFG CO.
MPC8541CPXAJD
Freescale Semiconductor
'MPC8541CPXAJD' PDF : 84 Pages View PDF
Ethernet: Three-Speed, MII Management
Figure 14 shows the RBMII and RTBI AC timing and multiplexing diagrams.
GTX_CLK
(At Transmitter)
TXD[8:5][3:0]
TXD[7:4][3:0]
TXD[3:0]
TXD[8:5]
TXD[7:4]
tRGTH
tSKRGT
tRGT
TX_CTL
TXD[4] TXD[9]
TXEN TXERR
TX_CLK
(At PHY)
tSKRGT
RXD[8:5][3:0]
RXD[7:4][3:0]
RX_CTL
RX_CLK
(At PHY)
RXD[3:0]
RXD[8:5]
RXD[7:4]
RXD[4] RXD[9]
RXDV RXERR
tSKRGT
tSKRGT
Figure 14. RGMII and RTBI AC Timing and Multiplexing Diagrams
8.3 Ethernet Management Interface Electrical Characteristics
The electrical characteristics specified here apply to MII management interface signals MDIO
(management data input/output) and MDC (management data clock). The electrical characteristics for
GMII, RGMII, TBI and RTBI are specified in Section 8.1, “Three-Speed Ethernet Controller (TSEC)
(10/100/1000 Mbps)—GMII/MII/TBI/RGMII/RTBI Electrical Characteristics.”
8.3.1 MII Management DC Electrical Characteristics
The MDC and MDIO are defined to operate at a supply voltage of 3.3 V. The DC electrical characteristics
for MDIO and MDC are provided in Table 27.
Table 27. MII Management DC Electrical Characteristics
Parameter
Supply voltage (3.3 V)
Output high voltage
Output low voltage
Input high voltage
Input low voltage
Symbol
Conditions
OVDD
VOH
VOL
VIH
VIL
—
IOH = –1.0 mA LVDD = Min
IOL = 1.0 mA
LVDD = Min
—
—
Min
3.13
2.10
GND
1.70
—
Max
Unit
3.47
V
LVDD + 0.3
V
0.50
V
—
V
0.90
V
MPC8541E PowerQUICC™ III Integrated Communications Processor Hardware Specification, Rev. 4.2
30
Freescale Semiconductor
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