Datasheet

MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
Freescale Semiconductor 23
USB
8.4.2 IEEE 1588 Timer AC Specifications
This table provides the IEEE 1588 timer AC specifications.
9USB
9.1 USB Dual-Role Controllers
This section provides the AC and DC electrical specifications for the USB-ULPI interface.
9.1.1 USB DC Electrical Characteristics
This table lists the DC electrical characteristics for the USB interface.
Input low voltage V
IL
—–0.30.8V
Input current I
IN
0 V V
IN
NVDD — ± 5 A
Table 29. IEEE 1588 Timer AC Specifications
Parameter Symbol Min Max Unit Notes
Timer clock cycle time t
TMRCK
070MHz1
Input setup to timer clock t
TMRCKS
———2, 3
Input hold from timer clock t
TMRCKH
———2, 3
Output clock to output valid t
GCLKNV
06ns—
Timer alarm to output valid t
TMRAL
——— 2
Note:
1. The timer can operate on rtc_clock or tmr_clock. These clocks get muxed and any one of them can be selected.
2. Asynchronous signals.
3. Inputs need to be stable at least one TMR clock.
Table 30. USB DC Electrical Characteristics
Parameter Symbol Min Max Unit
High-level input voltage V
IH
2 LVDD + 0.3 V
Low-level input voltage V
IL
–0.3 0.8 V
Input current I
IN
—±5 A
High-level output voltage, I
OH
= –100 AV
OH
LVDD – 0.2 — V
Low-level output voltage, I
OL
= 100 AV
OL
—0.2V
Note:
1. The symbol V
IN
, in this case, represents the NV
IN
symbol referenced in Tabl e 1 and Ta bl e 2.
Table 28. GPIO DC Electrical Characteristics (continued)
Characteristic Symbol Condition Min Max Unit