DP83257VF National Semiconductor, DP83257VF Datasheet - Page 65

• 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

5 0 Registers
(Continued)
5 21 CURRENT STATE PRESCALE COUNT REGISTER (CSPCR)
The Current State Prescale Count Register takes a snap-shot of the State Prescale 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
ADDRESS
READ
WRITE
14h
Always
Write Reject
D7
D6
D5
D4
D3
D2
D1
D0
CSPC7
CSPC6
CSPC5
CSPC4
CSPC3
CSPC2
CSPC1
CSPC0
Bit
Symbol
Description
D0 –D7
CSPC0–7
CURRENT STATE PRESCALE COUNT
0–7
Snapshot of the State Prescale Counter
k
l
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