mpc8641 Freescale Semiconductor, Inc, mpc8641 Datasheet - Page 29

• Manufacturer Part Number: mpc8641
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

8
This section provides the AC and DC electrical characteristics for enhanced three-speed and MII
management.
8.1
The electrical characteristics specified here apply to all gigabit media independent interface (GMII), media
independent interface (MII), ten-bit interface (TBI), reduced gigabit media independent interface
(RGMII), reduced ten-bit interface (RTBI), and reduced media independent interface (RMII) signals
except management data input/output (MDIO) and management data clock (MDC). The RGMII and RTBI
interfaces are defined for 2.5 V, while the GMII and TBI interfaces can be operated at 3.3 or 2.5 V. Whether
the GMII or TBI interface is operated at 3.3 or 2.5 V, the timing is compatible with IEEE 802.3. The
RGMII and RTBI interfaces follow the Reduced Gigabit Media-Independent Interface (RGMII)
Specification Version 1.3 (12/10/2000). The RMII interface follows the RMII Consortium RMII
Specification Version 1.2 (3/20/1998). The electrical characteristics for MDIO and MDC are specified in
Section 9, “Ethernet Management Interface Electrical Characteristics.”
8.1.1
All GMII, MII, TBI, RGMII, RMII and RTBI drivers and receivers comply with the DC parametric
attributes specified in
RGMII, RMII or RTBI receiver may exceed the potential of the receiver’s power supply (that is, a GMII
driver powered from a 3.6-V supply driving V
Tolerance for dissimilar GMII driver and receiver supply potentials is implicit in these specifications. The
RGMII and RTBI signals are based on a 2.5-V CMOS interface voltage as defined by JEDEC
EIA/JESD8-5.
Freescale Semiconductor
Supply voltage 3.3 V
Output high voltage
(LV
Output low voltage
(LV
Input high voltage
Input low voltage
Input high current
(V
IN
DD
DD
= LV
/TV
/TV
Ethernet: Enhanced Three-Speed Ethernet (eTSEC),
MII Management
DD
DD
DD
Enhanced Three-Speed Ethernet Controller (eTSEC)
(10/100/1Gb Mbps)—GMII/MII/TBI/RGMII/RTBI/RMII Electrical
Characteristics
, V
eTSEC DC Electrical Characteristics
Parameter
= Min, I
= Min, I
IN
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
= TV
OH
OL
Table 24. GMII, MII, RMII, TBI and FIFO DC Electrical Characteristics
DD
= 4.0 mA)
= –4.0 mA)
)
Table 24
and
Symbol
Table
TV
LV
V
V
V
V
I
OH
OL
IH
IH
DD
IL
DD
25. The potential applied to the input of a GMII, MII, TBI,
OH
3.135
2.40
Min
2.0
—
—
—
into a GMII receiver powered from a 2.5-V supply).
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
3.465
Max
0.50
0.90
—
—
40
Unit
μA
V
V
V
V
V
Notes
1, 2,3
1, 2
—
—
—
—
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