Electronic Component Distributor. Source::Freescale Semiconductor
P.N:MPC8349CZUAGDB Desc:IC MPU POWERQUICC II PRO 672TBGA
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MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13
Freescale Semiconductor
29
Ethernet: Three-Speed Ethernet, MII Management
Figure 15
shows the TBI receive AC timing diagram.
Figure 15. TBI Receive AC Timing Diagram
RXD[7:0], RX_DV, RX_ER (RCG[9:0]) setup time to rising
PMA_RX_CLK
t
TRDVKH
2
2.5
—
—
ns
RXD[7:0], RX_DV, RX_ER (RCG[9:0]) hold time to rising
PMA_RX_CLK
t
TRDXKH
2
1.5
—
—
ns
RX_CLK clock rise time (20%–80%)
t
TRXR
0.7
—
2.4
ns
RX_CLK clock fall time (80%–20%)
t
TRXF
0.7
—
2.4
ns
Notes:
1. The symbols 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
TRDVKH
symbolizes TBI receive timing
(TR) with respect to the time data input signals (D) reach the valid state (V) relative to the t
TRX
clock reference (K) going to
the high (H) state or setup time. Also, t
TRDXKH
symbolizes TBI receive timing (TR) with respect to the time data input signals
(D) went invalid (X) relative to the t
TRX
clock reference (K) going to the high (H) state. In general, the clock reference symbol
is based on three letters representing the clock of a particular function. For example, the subscript of t
TRX
represents the TBI
(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 SK followed by the clock that is being skewed (TRX).
2. Setup and hold time of even numbered RCG are measured from the riding edge of PMA_RX_CLK1. Setup and hold times
of odd-numbered RCG are measured from the riding edge of PMA_RX_CLK0.
Table 30. TBI Receive AC Timing Specifications (continued)
At recommended operating conditions with LV
DD
/OV
DD
of 3.3 V ± 10%.
Parameter/Condition
Symbol
1
Min
Typ
Max
Unit
PMA_RX_CLK1
RCG[9:0]
t
TRX
t
TRXH
t
TRXR
t
TRXF
t
TRDVKH
PMA_RX_CLK0
t
TRDXKH
t
TRDVKH
t
TRDXKH
t
TRXH
Even RCG
Odd RCG
t
SKTRX
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