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SCK Output
SIN
SOUT
Fist Data
Fist Data
Last Data
Last Data
Data
Data
SCK Output
(CPOL = 0)
PCSx
(CPOL = 1)
t
t
t
t
SUI
HI
SUO
HO
Figure 31. DSPI CMOS master mode – classic timing, CPHA = 1
PCSx
PCSS
t
PCSC
t
PASC
Figure 32. DSPI PCS strobe (PCSS) timing (master mode)
18.2.1.2 DSPI CMOS master mode – modified timing
All output timing is worst case and includes the mismatching of rise and fall times of the
output pads.
NOTE
In
, all output timing is worst case and includes the
mismatching of rise and fall times of the output pads.
Table 41. DSPI CMOS master modified timing (full duplex and output only) - MTFE = 1,
CPHA = 0 or 1
#
Symbol
Characteristic
Condition
Value
Unit
Pad drive
Load (C
L
)
Min
Max
1 t
SCK
SCK cycle time
SCK drive strength
Very strong
25 pF
33.0
—
ns
Strong
50 pF
80.0
—
Table continues on the next page...
AC specifications
SPC5746R Microcontroller Data Sheet, Rev. 6, 06/2017
NXP Semiconductors
69