st802rt1a STMicroelectronics, st802rt1a Datasheet - Page 28

• Manufacturer Part Number: st802rt1a
• Description: 10/100 Real-time Ethernet 3.3 V Transceiver
• Manufacturer: STMicroelectronics

Registers and descriptors description
Table 20.
28/58
15:11
Bit
10
9
8
7
6
5
4
3
2
1
0
Auto neg interrupt
Auto-Negotiation
Link Code Word
Auto neg page
Remote fault
RESERVED
FX_MODE
Link down
Link down
RX_FULL
Bit name
Received
interrupt
interrupt
interrupt
received
RN11 [0d17, 0x11]: Receiver configuration information and interrupt status register
Duplex
Speed
Pause
---
1 -> FX mode set
0 -> FX mode not set
If set to '1', auto-negotiation and scrambling is disabled. This
bit can be set through an opportune hardware topology in
ST802RT1B
1 -> 100 Mb/s mode
0 -> 10 Mb/s mode
This bit holds a valid value only if a link is already established
1 -> Full-duplex mode enabled
0 -> Half-duplex mode enabled
This bit holds a valid value only if a link is already established
1 -> Pause is enabled
0 -> Pause is disabled
Pause is active only after auto-negotiation completion, if both
devices; support symmetric pause (RN04[10], RN05[10])
1 -> “Auto-negotiation completed” interrupt is pending
0 -> Auto-negotiation not yet completed
Interrupt enabled by RN12[6]
1 -> “Remote fault condition” interrupt is pending
0 -> No remote fault condition detected
Interrupt enabled by RN12[5]
1 -> “link status changed to fail” interrupt is pending
0 -> no link status changes
Interrupt enabled by RN12[4]
1 -> “acknowledge match” interrupt is pending
0 -> no link code word received
Interrupt enabled by RN12[3]
1 -> “Parallel Detection fault” interrupt is pending
0 -> No Parallel Detection faults
Interrupt enabled by RN12[2]
1 -> “Auto-negotiation page received” interrupt is pending
0 -> no auto-negotiation page received
Interrupt enabled by RN12[1]
1 -> “receive error buffer full” interrupt is pending (64k packet
errors)
0 -> less than 64k error packets received
Interrupt enabled by RN12[0]. Related counter is cleared
after read
Doc ID 17049 Rev 1
Description
ST802RT1A, ST802RT1B
Default
00000b
0
0
0
0
0
0
0
0
0
0
0
type
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Type
LH
LH
LH
LH
LH
LH
LH
P
-
-
-
-