MPC8358 FREESCALE [Freescale Semiconductor, Inc], MPC8358 Datasheet - Page 32

• Manufacturer Part Number: MPC8358
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

UCC Ethernet Controller: Three-Speed Ethernet, MII Management
8.2.4
This section describes the TBI transmit and receive AC timing specifications.
8.2.4.1
Table 32
Figure 16
32
At recommended operating conditions with LV
GTX_CLK clock period
GTX_CLK duty cycle
GTX_CLK to TBI data TCG[9:0] delay
GTX_CLK clock rise time, VIL(min) to VIH(max)
GTX_CLK clock fall time, VIH(max) to VIL(min)
GTX_CLK125 reference clock period
GTX_CLK125 reference clock duty cycle
Notes:
1. The symbols used for timing specifications herein follow the pattern of t
2. This symbol is used to represent the external GTX_CLK125 and does not follow the original symbol naming convention.
)(reference)(state)
symbolizes the TBI transmit timing (TT) with respect to the time from t
signals (D) reach the valid state (V) or setup time. Also, t
the time from t
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
convention is used with the appropriate letter: R (rise) or F (fall).
MPC8358E PowerQUICC™ II Pro Processor Revision 2.1 PBGA Silicon Hardware Specifications, Rev. 1
provides the TBI transmit AC timing specifications.
shows the TBI transmit AC timing diagram.
TBI AC Timing Specifications
TBI Transmit AC Timing Specifications
Parameter/Condition
GTX_CLK
TTX
for inputs and t
TXD[7:0]
TX_EN
TX_ER
(K) going high (H) until the referenced data signals (D) reach the invalid state (X) or hold time. Note
Table 32. TBI Transmit AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Figure 16. TBI Transmit AC Timing Diagram
t
TTXH
DD
/ OV
TTX
t
DD
TTX
represents the TBI (T) transmit (TX) clock. For rise and fall times, the latter
of 3.3 V ± 10%.
t
G125H
t
TTKHDX
Symbol
TTXH
t
t
TTKHDX
TTKHDV
t
t
t
t
TTXR
TTXF
G125
TTX
t
TTXF
/t
/t
TTX
G125
symbolizes the TBI transmit timing (TT) with respect to
1
TTX
(first two letters of functional block)(signal)(state
t
TTKHDX
(K) going high (H) until the referenced data
Min
0.9
t
40
45
—
—
—
—
—
TTXR
for outputs. For example, t
Typ
8.0
8.0
—
—
—
—
—
Max
5.0
1.0
1.0
60
55
—
—
—
Freescale Semiconductor
Unit
ns
ns
ns
ns
ns
ns
%
TTKHDV
Notes
2