mpc8308 Freescale Semiconductor, Inc, mpc8308 Datasheet - Page 20

• Manufacturer Part Number: mpc8308
• Description: Mpc8308 Powerquicc Ii Pro Processor Hardware Specification
• Manufacturer: Freescale Semiconductor, Inc

Ethernet: Three-Speed Ethernet, MII Management
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 MII
and RGMII are specified in
(10/100/1000 Mbps)—MII/RGMII Electrical Characteristics.”
8.3.1
The MDC and MDIO are defined to operate at a supply voltage of 3.3 V.
electrical characteristics for MDIO and MDC.
8.3.2
Table 27
20
At recommended operating conditions with LV
MDC frequency
MDC period
MDC clock pulse width high
MDC to MDIO delay
MDIO to MDC setup time
MDIO to MDC hold time
MDC rise time
Supply voltage (3.3 V)
Output high voltage
Output low voltage
Input high voltage
Input low voltage
Input high current
Input low current
Note:
1. Note that the symbol V
Parameter
Parameter/Condition
provides the MII management AC timing specifications.
Ethernet Management Interface Electrical Characteristics
MII Management DC Electrical Characteristics
MII Management AC Electrical Specifications
Table 26. MII Management DC Electrical Characteristics When Powered at 3.3 V
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 1
IN
Symbol
, in this case, represents the LV
NV
V
V
V
V
I
I
OH
IH
OL
IL
IH
IL
DD
Table 27. MII Management AC Timing Specifications
Section 8.1, “Enhanced Three-Speed Ethernet Controller (eTSEC)
Symbol
t
t
t
DDA
MDKHDX
MDDVKH
MDDXKH
t
t
f
t
MDCH
MDCR
MDC
MDC
/LV
I
OH
I
NV
NV
DDB
OL
1
= –1.0 mA
DD
DD
= 1.0 mA
is 3.3 V ± 0.3V
= Max
= Max
Min
32
10
—
—
—
Conditions
IN
5
0
symbol referenced in
—
—
—
V
NV
LV
V
IN
Typ
400
IN
2.5
—
—
—
—
—
DD
DD
1
= 0.5 V
= 2.1 V
= Min
= Min
Table 1
Table 26
Max
170
—
—
—
—
—
10
and
–600
VSS
2.10
Min
3.0
2.0
—
—
Table
provides the DC
Freescale Semiconductor
2.
MHz
Unit
NV
ns
ns
ns
ns
ns
ns
DD
Max
0.50
0.80
3.6
40
—
—
+ 0.3
Notes
—
—
—
—
—
2
3
Unit
μA
μA
V
V
V
V
V