MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 37
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MPC8544COMEDEV
Manufacturer Part Number
MPC8544COMEDEV
Description
KIT DEV EXPRESS MPC8544COM
Manufacturer
Freescale Semiconductor
Type
MPUr
Datasheets
1.MPC8544VTALF.pdf
(117 pages)
2.MPC8544VTALF.pdf
(2 pages)
3.MPC8544VTALF.pdf
(1340 pages)
Specifications of MPC8544COMEDEV
Contents
Board
For Use With/related Products
MPC8544
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Figure 20
8.7.3
When the eTSEC is configured for TBI modes, all clocks are supplied from external sources to the relevant
eTSEC interface. In single-clock TBI mode, when TBICON[CLKSEL] = 1, a 125-MHz TBI receive clock
is supplied on the TSECn_RX_CLK pin (no receive clock is used on TSECn_TX_CLK in this mode,
whereas for the dual-clock mode this is the PMA1 receive clock). The 125-MHz transmit clock is applied
on the TSEC_GTX_CLK125 pin in all TBI modes.
Freescale Semiconductor
At recommended operating conditions with L/TVDD of 3.3 V ± 5% or 2.5 V ± 5%.
PMA_RX_CLK[0:1] duty cycle
RCG[9:0] setup time to rising PMA_RX_CLK
PMA_RX_CLK to RCG[9:0] hold time
PMA_RX_CLK[0:1] clock rise time (20%-80%)
PMA_RX_CLK[0:1] clock fall time (80%-20%)
Note:
1. The symbols used for timing specifications follow the pattern of t
inputs and t
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
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).
shows the TBI receive AC timing diagram.
TBI Single-Clock Mode AC Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Parameter/Condition
PMA_RX_CLK1
PMA_RX_CLK0
TRX
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
represents the TBI (T) receive (RX) clock. For rise and fall times, the latter convention is used with the
RCG[9:0]
Table 35. TBI Receive AC Timing Specifications (continued)
Figure 20. TBI Receive AC Timing Diagram
t
t
SKTRX
TRXH
t
TRDVKH
TRX
clock reference (K) going to the high (H) state. Note that, in general, the clock
TRDXKH
t
TRX
t
Symbol
TRXH
t
t
t
TRXH
TRDVKH
TRDXKH
t
t
symbolizes TBI receive timing (TR) with respect to the time data input
TRXR
TRXF
/t
Valid Data
TRX
1
(first two letters of functional block)(signal)(state)(reference)(state)
for outputs. For example, t
t
TRXF
Enhanced Three-Speed Ethernet (eTSEC), MII Management
Min
2.5
1.5
0.7
0.7
40
Valid Data
t
TRDXKH
t
TRXR
t
Typ
TRDVKH
—
—
—
—
—
t
TRDXKH
TRDVKH
Max
2.4
2.4
60
—
—
TRX
symbolizes TBI receive
clock reference (K)
Unit
ns
ns
ns
ns
%
Notes
—
—
—
—
—
for
37
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