mpc8568e Freescale Semiconductor, Inc, mpc8568e Datasheet - Page 36

• Manufacturer Part Number: mpc8568e
• Description: Mpc8568e Powerquicc Iii Processor
• Manufacturer: Freescale Semiconductor, Inc

Ethernet Interface and MII Management
8.2.4.2
Table 32
Figure 16
36
At recommended operating conditions with L/TV
PMA_RX_CLK[0:1] clock period
PMA_RX_CLK[0:1] skew
PMA_RX_CLK[0:1] duty cycle
RCG[9:0] setup time to rising PMA_RX_CLK
RCG[9:0] hold time to rising PMA_RX_CLK
PMA_RX_CLK[0:1] clock rise time (20%-80%)
PMA_RX_CLK[0:1] clock fall time (80%-20%)
Note:
1. The symbols used for timing specifications herein follow the pattern of t
2. Guaranteed by design.
(reference)(state)
t
relative to the t
receive timing (TR) with respect to the time data input signals (D) went invalid (X) relative to the t
(K) going to the high (H) state. Note that, in general, the clock reference symbol representation is based on three
letters representing the clock of a particular functional. For example, the subscript of t
receive (RX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
For symbols representing skews, the subscript is skew (SK) followed by the clock that is being skewed (TRX).
TRDVKH
provides the TBI receive AC timing specifications.
shows the TBI receive AC timing diagram.
MPC8568E/MPC8567E PowerQUICC III™ Integrated Processor Hardware Specifications, Rev. 0
PMA_RX_CLK1
PMA_RX_CLK0
TBI Receive AC Timing Specifications
symbolizes TBI receive timing (TR) with respect to the time data input signals (D) reach the valid state (V)
Parameter/Condition
for inputs and t
TRX
RCG[9:0]
clock reference (K) going to the high (H) state or setup time. Also, t
Table 32. TBI Receive AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Figure 16. TBI Receive AC Timing Diagram
t
DD
t
SKTRX
TRXH
t
TRDVKH
of 3.3 V ± 5%.
t
TRX
t
TRXH
Valid Data
t
Symbol
TRXH
t
t
TRDXKH
t
TRDVKH
t
t
SKTRX
TRXR
TRXF
t
TRX
t
/t
TRXF
TRX
2
2
1
Valid Data
t
TRDXKH
(first two letters of functional block)(signal)(state)
Min
7.5
2.5
1.5
0.7
0.7
40
—
t
TRXR
t
TRDVKH
for outputs. For example,
16.0
Typ
t
TRDXKH
—
—
—
—
—
—
TRX
TRDXKH
represents the TBI (T)
Freescale Semiconductor
symbolizes TBI
TRX
Max
8.5
2.4
2.4
60
—
—
—
clock reference
Unit
ns
ns
ns
ns
ns
ns
%