dsp56854 Freescale Semiconductor, Inc, dsp56854 Datasheet - Page 44

• Manufacturer Part Number: dsp56854
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

4.10 Quad Timer Timing
4.11 Enhanced Synchronous Serial Interface (ESSI) Timing
44
SCK frequency
SCK period
SCK high time
SCK low time
Output clock rise/fall time
Delay from SCK high to SC2 (bl) high - Master
Operating Conditions: V
Timer input period
Timer input high/low period
Timer output period
Timer output high/low period
Operating Conditions: V
Timer Inputs
Timer Outputs
1.
2.
In the formulas listed, T = clock cycle. For f
Parameters listed are guaranteed by design.
3
Table 4-11 ESSI Master Mode
SS
SS
Characteristic
= V
= V
SSIO
SSIO
Parameter
= V
= V
SSA
SSA
P
P
OUT
Table 4-10 Quad Timer Timing
IN
= 0 V, V
= 0 V, V
Figure 4-28 Timer Timing
DD
DD
56854 Technical Data, Rev. 6
= 1.62-1.98V, V
= 1.62-1.98V, V
op
5
= 120MHz operation and fipb = 60MHz, T = 8.33ns.
DDIO
DDIO
1
Switching Characteristics
= V
= V
Symbol
DDA
P
DDA
P
P
OUTHL
P
P
P
INHL
OUT
INHL
OUTHL
IN
= 3.0–3.6V, T
= 3.0–3.6V, T
Symbol
t
TFSBHM
t
t
t
SCKW
SCKH
SCKL
—
fs
1, 2
2T + 3
1T + 3
A
A
2T - 3
1T - 3
P
P
Min
= –40° to +120°C, C
= –40° to +120°C, C
INHL
OUTHL
33.4
33.4
66.7
Min
-1.0
—
—
4
4
Typ
—
—
—
—
—
Max
4
—
—
—
—
Freescale Semiconductor
L
L
≤ 50pF, f
≤ 50pF, f
15
Max
1.0
—
—
—
—
2
op
op
= 120MHz
= 120MHz
Unit
ns
ns
ns
ns
MHz
Units
ns
ns
ns
ns
ns