mpc8555e Freescale Semiconductor, Inc, mpc8555e Datasheet - Page 31

• Manufacturer Part Number: mpc8555e
• Description: Mpc8555e Powerquicc Iii Processor With Integrated Security
• Manufacturer: Freescale Semiconductor, Inc

Figure 14
8.3
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
(10/100/1000 Mbps)—GMII/MII/TBI/RGMII/RTBI Electrical Characteristics.”
8.3.1
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
Freescale Semiconductor
Supply voltage (3.3 V)
Output high voltage
Output low voltage
Input high voltage
Input low voltage
MPC8555E PowerQUICC™ III Integrated Communications Processor Hardware Specification, Rev. 4.2
Parameter
(At Transmitter)
Ethernet Management Interface Electrical Characteristics
shows the RBMII and RTBI AC timing and multiplexing diagrams.
RXD[8:5][3:0]
RXD[7:4][3:0]
TXD[8:5][3:0]
TXD[7:4][3:0]
MII Management DC Electrical Characteristics
GTX_CLK
(At PHY)
(At PHY)
RX_CTL
RX_CLK
TX_CLK
TX_CTL
Figure 14. RGMII and RTBI AC Timing and Multiplexing Diagrams
Table 27. MII Management DC Electrical Characteristics
Symbol
OV
V
V
V
V
OH
OL
IH
IL
DD
RXD[3:0]
TXD[3:0]
RXD[4]
TXD[4]
TXEN
RXDV
Table
I
OH
I
OL
= –1.0 mA
= 1.0 mA
27.
RXD[8:5]
RXD[7:4]
TXD[8:5]
TXD[7:4]
RXERR
TXERR
RXD[9]
TXD[9]
Conditions
Section 8.1, “Three-Speed Ethernet Controller (TSEC)
—
—
—
LV
LV
DD
DD
= Min
= Min
t
t
SKRGT
SKRGT
t
RGTH
GND
3.13
2.10
1.70
Min
—
Ethernet: Three-Speed, MII Management
t
RGT
LV
DD
Max
3.47
0.50
0.90
t
t
—
SKRGT
SKRGT
+ 0.3
Unit
V
V
V
V
V
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