DP83256VF National Semiconductor, DP83256VF Datasheet - Page 61

• Manufacturer Part Number: DP83256VF
• Description: IC FDDI LAYER CTRLR 160PQFP
• Manufacturer: National Semiconductor
• Series: PLAYER+™r

Specifications of DP83256VF

• 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: *DP83256VF

5 0 Registers
(Continued)
5 17 CURRENT NOISE PRESCALE COUNT REGISTER (CNPCR)
The Current Noise Prescale Count Register takes a snap-shot of the Noise Prescale Timer 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
10h
Always
Write Reject
D7
D6
D5
D4
D3
D2
D1
D0
CNPC7
CNPC6
CNPC5
CNPC4
CNPC3
CNPC2
CNPC1
CNPC0
Bit
Symbol
Description
D0 –D7
CNPC0–7
CURRENT NOISE PRESCALE COUNT BIT
0–7
Snapshot of the Noise Prescale Timer
k
l
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