MPC8378E-MDS-PB Freescale Semiconductor, MPC8378E-MDS-PB Datasheet - Page 38
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MPC8378E-MDS-PB
Manufacturer Part Number
MPC8378E-MDS-PB
Description
BOARD PROCESSOR FOR MDS S
Manufacturer
Freescale Semiconductor
Type
MPUr
Specifications of MPC8378E-MDS-PB
Contents
Board
For Use With/related Products
MPC8378
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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USB
Figure 20
9
This section provides the AC and DC electrical characteristics for the USB dual-role controllers.
38
MDC rise time (20%–80%)
MDC fall time (80%–20%)
Note:
1
2
3
4
5
The symbols used for timing specifications herein follow the pattern of t
for inputs and t
management data timing (MD) for the time t
hold time. Also, t
valid state (V) relative to the t
latter convention is used with the appropriate letter: R (rise) or F (fall).
This parameter is dependent on the system clock speed. (The maximum frequency is the maximum platform frequency
divided by 64.)
This parameter is dependent on the system clock speed. (That is, for a system clock of 267 MHz, the maximum frequency
is 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.)
Guaranteed by design.
t
plb_clk
USB
is the platform (CSB) clock divided according to the SCCR[TSEC1CM].
shows the MII management AC timing diagram.
Parameter
(first two letters of functional block)(reference)(state)(signal)(state)
MDDVKH
(Output)
(Input)
MDIO
MDIO
MDC
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4
Table 38. MII Management AC Timing Specifications (continued)
symbolizes management data timing (MD) with respect to the time data input signals (D) reach the
Figure 20. MII Management Interface Timing Diagram
MDC
clock reference (K) going to the high (H) state or setup time. For rise and fall times, the
Symbol
t
MDCH
t
t
MDCR
MDCF
t
MDDVKH
MDC
t
1
MDC
t
MDKHDX
from clock reference (K) high (H) until data outputs (D) are invalid (X) or data
Min
—
—
t
MDCF
for outputs. For example, t
(first two letters of functional block)(signal)(state) (reference)(state)
Typical
t
MDDXKH
—
—
t
MDCR
Max
10
10
MDKHDX
Freescale Semiconductor
symbolizes
Unit
ns
ns
Notes
4
4
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