dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 44

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

5 0 Registers
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 to the Current State 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
D7
SCLSCD
ADDRESS
D0 – 6
D7
13h
Bit
D6
CSC6
(Continued)
READ
Always
D5
CSC5
CSC0 – 6
SCLSCD
Symbol
WRITE
Write Reject
D4
CSC4
D3
CSC3
44
CURRENT STATE COUNT BIT
STATE COUNTER LINE STATE CHANGE DETECTION
D2
CSC2
D1
CSC1
Description
k
D0
CSC0
0 – 6
l