DP83257VF National Semiconductor, DP83257VF Datasheet - Page 77

• Manufacturer Part Number: DP83257VF
• Description: IC FDDI LAYER CTRLR 160PQFP
• Manufacturer: National Semiconductor

Specifications of DP83257VF

• Controller Type: physical layer controller
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-BFQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Interface: -
• Other names: *DP83257VF

D0-D5
D6
D7
5 0 Registers
5 33 CMT CONDITION REGISTER (CMTCR)
The CMT Condition Register maintains a history of all CMT events and actions performed The corresponding CMT Condition
Mask Register (CMTCMR) can be used to generate an interrupt When the bits in both the CMTCMR and CMTCR are set the
Receive Condition Register B’s Connection Service Event (RCRB CSE) bit will be set
ACCESS RULES
Bit
TCO
ADDRESS
D7
Symbol
RES
STE
TCO
20h
STE
D6
RESERVED Reserved for future use
SCRUB TIMER EXPIRED This bit is set to 1 when the Scrub Timer expires
Note When STE is set the Configuration Register (CR) is protected
TRIGGER CONDITION OCCURRED This bit is set to 1 when a trigger condition is met When a trigger occurs
the values in the Trigger Transmit Mode (TDR TTM2-0) are loaded into the Current Transmit Mode Register
(CTSR TM2-0)
Note When TCO is set the Current Transmit State Register (CTSR) is protected
(Continued)
Always
READ
RES
D5
Conditional
RES
WRITE
D4
RES
D3
77
Description
RES
D2
RES
D1
RES
D0