dp83261 National Semiconductor Corporation, dp83261 Datasheet - Page 44

• Manufacturer Part Number: dp83261
• Description: Bmac Device Fddi Media Access Controller
• Manufacturer: National Semiconductor Corporation

Bit
D0
D1
D2
D3
D4
D5
D6
D7
6 0 Control Information
Counter Overflow Latch Register (COLR)
The Counter Overflow Latch Register (COLR) records carry events from the 20th bit of the Event Counters Each bit in the
COLR corresponds to an individual counter Each bit may be masked via the Counter Overflow Mask Register (COMR)
ACCESS RULES
REGISTER BITS
RES
D7
Address
FRRCV
FREI
FRLST
FRCOP
FRNCOP
FRTRX
TKRCVD
RES
Symbol
1Ch
TKRCVD
D6
Frame Received Is set to One when the Frame Received Counter (FRCT) overflows
Frame Error Isolated Is set to One when the Error Isolated Counter (EICT) overflows
Frame Lost Isolated Is set to One when the Lost Frame Counter (LFCT) overflows
Frame Copied Is set to One when the Frame Copied Counter (FCCT) overflows
Frame Not Copied Is set to One when the Frame Not Copied Counter (FNCT) overflows
Frame Transmitted Is set to One when the Frame Transmitted Counter (FTCT) overflows
Token Received Is set to One when the Token Received Counter (TKCT) overflows
Reserved
FRTRX
D5
Always
Read
FRNCOP
D4
(Continued)
Condition
FRCOP
Write
D3
FRLST
D2
44
FREI
D1
Description
FRRCV
D0