Datasheet

Table 49. Nexus debug port timing
1
(continued)
No. Symbol Parameter Condition
s
Min Max Unit
9 t
NTDIH
,
t
NTMSH
TDI, TMS Data Hold Time — 5 — ns
10 t
JOV
TCK Low to TDO/RDY Data Valid — 0 25 ns
1. JTAG specifications in this table apply when used for debug functionality. All Nexus timing relative to MCKO is measured
from 50% of MCKO and 50% of the respective signal.
2. For all Nexus modes except DDR mode, MDO, MSEO, and EVTO data is held valid until next MCKO low cycle.
3. The system clock frequency needs to be four times faster than the TCK frequency.
1
2
MCKO
MDO
MSEO
EVTO
Output Data Valid
3
5
Figure 30. Nexus output timing
EVTI
4
Figure 31. Nexus EVTI Input Pulse Width
Debug specifications
MPC5748G Microcontroller Datasheet Data Sheet, Rev. 2, 05/2014.
58
Preliminary
Freescale Semiconductor, Inc.