DP83257VF National Semiconductor, DP83257VF Datasheet - Page 64
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DP83257VF
Manufacturer Part Number
DP83257VF
Description
IC FDDI LAYER CTRLR 160PQFP
Manufacturer
National Semiconductor
Datasheet
1.DP83256VF.pdf
(144 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DP83257VF
Manufacturer:
NVIDIA
Quantity:
12 388
- Current page: 64 of 144
- Download datasheet (997Kb)
D0 –D6
D7
5 0 Registers
5 20 CURRENT STATE COUNT REGISTER (CSCR)
The Current State Count Register takes a snap-shot of the State Counter during every Control Bus Interface read cycle of this
register
During a Control Bus Interface write cycle the Control Bus Write Command Reject bit (CCR) of the Interrupt Condition Register
(ICR) will be set to 1 and will ignore a write cycle
ACCESS RULES
Bit
SCLSCD
ADDRESS
D7
13h
CSC0 –CSC6
SCLSCD
Symbol
CSC6
D6
(Continued)
CURRENT STATE COUNT BIT
STATE COUNTER LINE STATE CHANGE DETECTION
Always
READ
CSC5
D5
Write Reject
WRITE
CSC4
D4
k
CSC3
0 –6
D3
64
l
Snapshot of the State Counter
Description
CSC2
D2
CSC1
D1
CSC0
D0
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