Motorola DSP56367 User Manual page 123

Table 3-19 Serial Host Interface SPI Protocol Timing (Continued)
No.
Characteristics
157 First SCK sampling edge to HREQ output
deassertion
158 Last SCK sampling edge to HREQ output
not deasserted (CPHA = 1)
159 SS deassertion to HREQ output not
deasserted (CPHA = 0)
160 SS deassertion pulse width (CPHA = 0)
161 HREQ in assertion to first SCK edge
162 HREQ in deassertion to last SCK sampling
edge (HREQ in set-up time) (CPHA = 1)
163 First SCK edge to HREQ in not asserted
(HREQ in hold time)
= 1.8 V ± 5%; T
Note: 1. V
CC
2. Periodically sampled, not 100% tested
MOTOROLA
Serial Host Interface SPI Protocol Timing
Filter
1
Mode
Mode
Slave Bypassed
Narrow
Wide
Slave Bypassed
Narrow
Wide
Slave
Slave
Maste Bypassed
r
Narrow
Wide
Maste
r
Maste
r
= 0°C to +95°C, C = 50 pF
J L
DSP56367
Expression
2.5×T +30
C
2.5×T +120
C
2.5×T +217
C
2.5×T +30
C
2.5×T +80
C
2.5×T +136
C
— 2.5×T +30
C
— T +6
C
0.5 × t
+
SPICC
2.5×T +43
C
0.5 ×t
+
SPICC
2.5×T +43
C
0.5 ×t
+
SPICC
2.5×T +43
C
— 0
— 0
Specifications
Min Max Unit
— 50.8 ns
— 140.8 ns
— 237.8 ns
50.8 — ns
100.8 — ns
156.8 — ns
50.8 — ns
14.3 — ns
111.8 — ns
164.8 — ns
200.3 — ns
0 — ns
0 — ns
3-57