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• All DSPI timing specifications apply to pins when using LVDS pads for SCK and
SOUT and CMOS pad for PCS with pad driver strength as defined. Timing may
degrade for weaker output drivers.
• TSB = 1 or ITSB = 1 automatically selects MTFE = 1 and CPHA = 1.
Table 43. DSPI LVDS master timing - output only - timed serial bus mode TSB = 1 or ITSB =
1, CPOL = 0 or 1, continuous SCK clock
#
Symbol
Characteristic
Condition
Value
Unit
Pad drive
Load
Min
Max
1 t
SCK
SCK cycle time
LVDS
15 pF
to 50 pF
differential
25.0
—
ns
2 t
CSV
PCS valid after SCK
(SCK with 50 pF
differential load cap.)
Very strong
25 pF
—
6.0
ns
Strong
50 pF
—
6.0
ns
3 t
CSH
(SCK with 50 pF
differential load cap.)
Very strong
0 pF
-4.0
—
ns
Strong
0 pF
-4.0
—
ns
4 t
SDC
SCK duty cycle
(SCK with 50 pF
differential load cap.)
LVDS
15 pF
to 50 pF
differential
1
/
2
t
SCK
- 2
1
/
2
t
SCK
+ 2
ns
SOUT data valid time (after SCK edge)
5 t
SUO
SOUT data valid time
from SCK
SOUT and SCK drive strength
LVDS
15 pF
to 50 pF
differential
—
3.5
ns
SOUT data hold time (after SCK edge)
6 t
HO
SOUT data hold time
after SCK
SOUT and SCK drive strength
LVDS
15 pF
to 50 pF
differential
-3.5
—
ns
1. With TSB mode or Continuous SCK clock mode selected, PCS and SCK are driven by the same edge of DSPI_CLKn. This
timing value is due to pad delays and signal propagation delays.
2. SOUT Data Valid and Data hold are independent of load capacitance if SCK and SOUT load capacitances are the same
value.
:
• TSB = 1 or ITSB = 1 automatically selects MTFE = 1 and CPHA = 1.
• All output timing is worst case and includes the mismatching of rise and fall times of
the output pads.
AC specifications
SPC5746R Microcontroller Data Sheet, Rev. 6, 06/2017
76
NXP Semiconductors