MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
36
Freescale Semiconductor
UCC Ethernet Controller: Three-Speed Ethernet, MII Management
8.2.4
TBI AC Timing Specifications
This section describes the TBI transmit and receive AC timing specifications.
8.2.4.1
TBI Transmit AC Timing Specifications
Table 33
provides the TBI transmit AC timing specifications.
Figure 18
shows the TBI transmit AC timing diagram.
Figure 18. TBI Transmit AC Timing Diagram
Table 33. TBI Transmit AC Timing Specifications
At recommended operating conditions with LV
DD
/OV
DD
of 3.3 V ± 10%.
Parameter/Condition
Symbol
1
Min
Typ
Max
Unit
Notes
GTX_CLK clock period
t
TTX
—
8.0
—
ns
—
GTX_CLK duty cycle
t
TTXH
/t
TTX
40
—
60
%
—
GTX_CLK to TBI data TCG[9:0] delay
t
TTKHDX
t
TTKHDV
1.0
—
—
—
5.0
ns
3
GTX_CLK clock rise time, (20% to 80%)
t
TTXR
—
—
1.0
ns
—
GTX_CLK clock fall time, (80% to 20%)
t
TTXF
—
—
1.0
ns
—
GTX_CLK125 reference clock period
t
G125
—
8.0
—
ns
2
GTX_CLK125 reference clock duty cycle
t
G125H
/t
G125
45
—
55
ns
—
Notes:
1. The symbols used for timing specifications follow the pattern of t
(first two letters of functional block)(signal)(state )(reference)(state)
for
inputs and t
(first two letters of functional block)(reference)(state)(signal)(state)
for outputs. For example, t
TTKHDV
symbolizes the TBI
transmit timing (TT) with respect to the time from t
TTX
(K) going high (H) until the referenced data signals (D) reach the valid
state (V) or setup time. Also, t
TTKHDX
symbolizes the TBI transmit timing (TT) with respect to the time from t
TTX
(K) going high
(H) until the referenced data signals (D) reach the invalid state (X) or hold time. 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
TTX
represents the TBI (T) transmit (TX) clock. For rise and fall times, the latter convention is used with the appropriate
letter: R (rise) or F (fall).
2. This symbol is used to represent the external GTX_CLK125 and does not follow the original symbol naming convention.
3. In rev. 2.0 silicon, due to errata, t
TTKHDX
minimum is 0.7 ns for UCC1. Refer to Errata
QE_ENET19 in Chip Errata for the
MPC8360E, Rev. 1.
GTX_CLK
TXD[7:0]
t
TTX
t
TTXH
t
TTXR
t
TTXF
t
TTKHDX
TX_EN
TX_ER