MSC8156 Freescale Semiconductor, Inc, MSC8156 Datasheet - Page 46

• Manufacturer Part Number: MSC8156
• Description: Six-core Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
Figure 21
Figure 22
2.6.4
Table 32
Note:
Figure 23
46
Timers inputs—minimum pulse width
Notes:
For recommended operating conditions, see
lists the timer input AC timing specifications.
1.
2.
shows the TDM transmit signal timing.
provides the AC test load for the TDM/SI.
shows the AC test load for the timers.
TDMxTFS (output)
TDMxTFS (input)
Timers AC Timing Specifications
The maximum allowed frequency of timer outputs is 125 MHz. Configure the timer modules appropriately.
Timer inputs and outputs are asynchronous to any visible clock. Timer outputs should be synchronized before use by any
external synchronous logic. Timer inputs are required to be valid for at least t
TDMxRCK
TDMxTCK
TDMxTD
t
Output
DMIVKH
Output
MSC8156 Six-Core Digital Signal Processor Data Sheet, Rev. 1
Characteristics
Table 32. Timers Input AC Timing Specifications
Figure 21. TDM Transmit Signals
Figure 23. Timer AC Test Load
Figure 22. TDM AC Test Load
t
DM_OUTAC
t
Z
Z
DMTKHOV
0
0
= 50 Ω
= 50 Ω
t
DM_HIGH
Table
t
DMFSIXKH
3.
t
DMFSKHOV
t
DM
t
DM_LOW
R
R
L
L
= 50 Ω
= 50 Ω
Symbol
T
TIWID
TIWID
ns to ensure proper operation.
t
DM_OUTHI
t
DMTKHOX
V
V
DDIO
DDIO
/2
/2
Minimum
8
Freescale Semiconductor
t
DMFSKHOX
Unit
ns
Notes
1, 2