Circuit Board Reference Manual

Memory Map/Register Definition
MCF548x Reference Manual, Rev. 3
Freescale Semiconductor 29-25
29.2.3.5 USB PID Error Counter Register (PIDECNT)
29.2.3.6 USB Framing Error Counter Register (FRMECNT)
Table 29-21. BSECNT Field Descriptions
Bits Name Description
15–0 BSECNT Bitstuffing error counter. This register counts the occurrences of bitstuffing errors in the
incoming packets.
1514131211109876543210
R PIDECNT
W
Reset0000000000000000
Reg
Addr
MBAR + 0xB088
Figure 29-22. USB PID Error Counter Register (PIDECNT)
Table 29-22. PIDECNT Field Descriptions
Bits Name Description
15–0 PIDECNT PID Error counter. This register counts the occurrences of errors in PID fields of incoming
packets.
1514131211109876543210
R FRMECNT
W
Reset0000000000000000
Reg
Addr
MBAR + 0xB08A
Figure 29-23. USB Framing Error Counter Register (FRMECNT)
Table 29-23. FRMECNT Field Descriptions
Bits Name Description
15–0 FRMECNT Framing error counter. This register counts the occurrences of errors in SYNC and EOP
fields of incoming packets.