MPC8347 FREESCALE [Freescale Semiconductor, Inc], MPC8347 Datasheet - Page 27

• Manufacturer Part Number: MPC8347
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

8.2.1.2
Table 25
Figure 8
Freescale Semiconductor
At recommended operating conditions with LV
RX_CLK clock period
RX_CLK duty cycle
RXD[7:0], RX_DV, RX_ER setup time to RX_CLK
RXD[7:0], RX_DV, RX_ER hold time to RX_CLK
RX_CLK clock rise, V
RX_CLK clock fall time, V
Note:
1. The symbols for timing specifications follow the pattern of t
G
and t
(GR) with respect to the time data input signals (D) reaching the valid state (V) relative to the t
to the high state (H) or setup time. Also, t
signals (D) went invalid (X) relative to the t
reference symbol is based on three letters representing the clock of a particular function. For example, the subscript of t
represents the GMII (G) receive (RX) clock. For rise and fall times, the latter convention is used with the appropriate letter:
R (rise) or F (fall).
(first two letters of functional block)(reference)(state)(signal)(state)
shows the GMII receive AC timing diagram.
provides the GMII receive AC timing specifications.
MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 3
GMII Receive AC Timing Specifications
RXD[7:0]
Parameter/Condition
RX_CLK
RX_DV
RX_ER
IL
(min) to V
IH
(max) to V
IH
Table 25. GMII Receive AC Timing Specifications
(max)
Figure 8. GMII Receive AC Timing Diagram
IL
t
t
GRXH
(min)
GRDVKH
DD
/ OV
GRDXKL
GRX
t
GRX
DD
clock reference (K) going to the low (L) state or hold time. In general, the clock
of 3.3 V ± 10%.
symbolizes GMII receive timing (GR) with respect to the time data input
for outputs. For example, t
(first two letters of functional block)(signal)(state) (reference)(state)
t
Symbol
GRXH
t
t
t
GRXF
GRDXKH
GRDVKH
t
t
t
GRXR
GRXF
GRX
t
/t
GRDXKH
GRX
1
t
GRXR
Ethernet: Three-Speed Ethernet, MII Management
Min
2.0
0.5
40
—
—
—
GRDVKH
Typ
symbolizes GMII receive timing
8.0
—
—
—
—
—
RX
clock reference (K) going
Max
1.0
1.0
60
—
—
—
for inputs
Unit
ns
ns
ns
ns
ns
%
GRX
27