dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 41

• Manufacturer Part Number: dp83251
• Description: Player Device Fddi Physical Layer Controller
• Manufacturer: National Semiconductor Corporation

5 0 Registers
CURRENT NOISE PRESCALE COUNT REGISTER (CNPCR)
The Current Noise Prescale Count Register takes a snap-shot of the Noise Prescale Counter during every Control Bus Interface
read-cycle of this register
During a Control Bus Interface write-cycle to the Current Noise Prescale Count Register the PLAYER device will set the Control
Bus Write Command Reject bit (CCR) of the Interrupt Condition Register (ICR) to 1 and will ignore a write-cycle
ACCESS RULES
D0 – 7
D7
CNPC7
ADDRESS
Bit
10h
D6
CNPC6
(Continued)
CNPC0 – 7
READ
Always
Symbol
D5
CNPC5
WRITE
Write Reject
D4
CNPC4
CURRENT NOISE PRESCALE COUNT BY
D3
CNPC3
41
D2
CNPC2
Description
D1
CNPC1
k
0 – 7
D0
CNPC0
l