dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 20

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

5 0 Registers
The PLAYER device is initialized configured and monitored via 32 8-bit registers These registers are accessible through the
Control Bus Interface
Table 5-1 is a Register Summary List Table 5-2 shows the contents of each register
Register
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh
Address
Register
MR
CR
ICR
ICMR
CTSR
IJTR
ISRA
ISRB
CRSR
RCRA
RCRB
RCMRA
RCMRB
NTR
NPTR
CNCR
CNPCR
STR
SPTR
CSCR
CSPCR
LETR
CLECR
UDR
IDR
CIJCR
ICCR
CTSCR
RCCRA
RCCRB
RR0
RR1
Symbol
Mode Register
Configuration Register
Interrupt Condition Register
Interrupt Condition Mask Register
Current Transmit State Register
Injection Threshold Register
Injection Symbol Register A
Injection Symbol Register B
Current Receive State Register
Receive Condition Register A
Receive Condition Register B
Receive Condition Mask Register A
Receive Condition Mask Register B
Noise Threshold Register
Noise Prescale Threshold Register
Current Noise Count Register
Current Noise Prescale Count Register
State Threshold Register
State Prescale Threshold Registger
Current State Count Register
Current State Prescale Count Register
Link Error Threshold Register
Current Link Error Count Register
User Definable Register
Device ID Register
Current Injection Count Register
Interrupt Condition Comparison Register
Current Transmit State Comparison Register
Receive Condition Comparison Register A
Receive Condition Comparison Register B
Reserved Register 0
Reserved Register 1
TABLE 5-1 Register Summary
Register Name
20
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Read
Access Rules
Always
Always
Conditional
Always
Conditional
Always
Always
Always
Write Reject
Conditional
Conditional
Always
Always
Always
Always
Write Reject
Write Reject
Always
Always
Write Reject
Write Reject
Always
Write Reject
Always
Write Reject
Write Reject
Always
Always
Always
Always
Write Reject
Write Reject
Write