Freescale Semiconductor MPC8358E Hardware Specificftion page 37

8.2.4.2 TBI Receive AC Timing Specifications
Table 34 provides the TBI receive AC timing specifications.
At recommended operating conditions with LV
Parameter/Condition
PMA_RX_CLK clock period
PMA_RX_CLK skew
RX_CLK duty cycle
RCG[9:0] setup time to rising PMA_RX_CLK
RCG[9:0] hold time to rising PMA_RX_CLK
RX_CLK clock rise time, V
RX_CLK clock fall time, V
IH
Notes:
1. The symbols used for timing specifications follow the pattern of t
inputs and t
(first two letters of functional block)(reference)(state)(signal)(state)
timing (TR) with respect to the time data input signals (D) reach the valid state (V) relative to the t
going to the high (H) state or setup time. Also, t
signals (D) went invalid (X) relative to the t
reference symbol representation is based on three letters representing the clock of a particular functional. For example, the
subscript of t represents the TBI (T) receive (RX) clock. For rise and fall times, the latter convention is used with the
TRX
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).
2. Setup and hold time of even numbered RCG are measured from riding edge of PMA_RX_CLK1. Setup and hold time of odd
numbered RCG are measured from riding edge of PMA_RX_CLK0.
Figure 19 shows the TBI receive AC timing diagram.
PMA_RX_CLK1
RCG[9:0]
PMA_RX_CLK0
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Freescale Semiconductor
Table 34. TBI Receive AC Timing Specifications
/OV of 3.3 V ± 10%.
DD DD
(min) to V (max)
IL IH
(max) to V (min)
IL
TRDXKH
clock reference (K) going to the high (H) state. Note that, in general, the clock
TRX
t
TRX
t
TRXH
t
TRDVKH
t
SKTRX
Figure 19. TBI Receive AC Timing Diagram
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1
Symbol Min
t —
TRX
t 7.5
SKTRX
t /t 40
TRXH TRX
2.5
t
TRDVKH
1.0
t
TRDXKH
t 0.7
TRXR
t 0.7
TRXF
(first two letters of functional block)(signal)(state)(reference)(state)
for outputs. For example, t
symbolizes TBI receive timing (TR) with respect to the time data input
t
TRXF
Even RCG Odd RCG
t
TRDXKH
t
TRXH
Typ Max
16.0 —
— 8.5
— 60
— —
— —
— 2.4
— 2.4
symbolizes TBI receive
TRDVKH
clock reference (K)
TRX
t
TRXR
t
TRDXKH
t
TRDVKH
Unit Notes
ns —
ns —
% —
ns 2
ns 2
ns —
ns —
for
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