MPC8548E Freescale, MPC8548E Datasheet - Page 40

• Manufacturer Part Number: MPC8548E
• Description: Integrated Processor
• Manufacturer: Freescale

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Ethernet Management Interface Electrical Characteristics
9.2
Table 36
40
At recommended operating conditions with OV
Input high current (OV
Input low current (OV
Note:
1. Note that the symbol V
MDC frequency
MDC period
MDC clock pulse width high
MDC to MDIO valid
MDC to MDIO delay
MDIO to MDC setup time
MDIO to MDC hold time
MDC rise time
MDC fall time
Notes:
1. The symbols used for timing specifications follow the pattern of t
2. This parameter is dependent on the system clock speed. (The maximum frequency is the maximum platform frequency
3. This parameter is dependent on the system clock speed. (That is, for a system clock of 267 MHz, the maximum frequency is
4. Guaranteed by design.
5. t
inputs and t
data timing (MD) for the time t
Also, t
(V) relative to the t
convention is used with the appropriate letter: R (rise) or F (fall).
divided by 64.)
8.3 MHz and the minimum frequency is 1.2 MHz; for a system clock of 375 MHz, the maximum frequency is 11.7 MHz and
the minimum frequency is 1.7 MHz.)
CCB
is the platform (CCB) clock period.
MDDVKH
provides the MII management AC timing specifications.
MII Management AC Electrical Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Parameter/Condition
symbolizes management data timing (MD) with respect to the time data input signals (D) reach the valid state
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 4
MDC
DD
DD
Table 35. MII Management DC Electrical Characteristics (continued)
= Max, V
= Max, V
IN
clock reference (K) going to the high (H) state or setup time. For rise and fall times, the latter
, in this case, represents the OV
Parameter
Table 36. MII Management AC Timing Specifications
MDC
IN
IN
= 0.5 V)
1
from clock reference (K) high (H) until data outputs (D) are invalid (X) or data hold time.
= 2.1 V)
DD
is 3.3 V ± 5%.
Symbol
IN
t
t
t
t
MDKHDV
MDKHDX
MDDVKH
MDDXKH
t
t
t
f
t
MDCH
MDCR
MDHF
symbol referenced in
MDC
MDC
for outputs. For example, t
(first two letters of functional block)(signal)(state)(reference)(state)
1
Symbol
I
I
IH
IL
16 × t
Min
120
5.2
48
10
—
—
5
0
CCB
Table 1
–600
Min
—
and
16 × t
MDKHDX
Max
192
8.3
10
10
—
—
—
—
Table
CCB
symbolizes management
Freescale Semiconductor
2.
Max
40
—
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Notes
Unit
2, 4
3, 5
μA
μA
—
—
—
—
for
5
4
4