st802rt1a STMicroelectronics, st802rt1a Datasheet - Page 35

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

ST802RT1A, ST802RT1B
Table 28.
10:9
1:0
Bit
15
14
13
12
11
8
7
6
5
4
3
2
HCD 100base-Tx FDX
HCD 10BASE-T HDX
HCD 10BASE-T FDX
HCD 100BASE-T4
HCD 100base-TX
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Acknowledge
Acknowledge
Super Isolate
RESERVED
RESERVED
RESERVED
Complete
Bit name
complete
RN1E [0d30, 0x1E]: Auxiliary PHY register
restart
Ability
HDX
1 -> AN 100Base-TX full-duplex selected
0 -> AN 100Base-TX full-duplex not selected
1 -> AN 100Base-T4 selected (not supported)
0 -> AN 100Base-T4 not selected
Internally fixed to '0'
1 -> AN 100Base-TX half-duplex selected
0 -> AN 100Base-TX half-duplex not selected
1 -> AN 10Base-T full-duplex selected
0 -> AN 10Base-T full-duplex not selected
1 -> AN 10Base-T half-duplex selected
0 -> AN 10Base-T half-duplex not selected
---
1 -> Restarts auto-negotiation process (ignored if auto-
negotiation is disabled)
0 -> Normal operation
Self-cleared after 21MHz-clock periods (auto-negotiation
is started). Same as RN00_CNTRL[9]
1 -> Auto-negotiation process completed
0 -> Auto-negotiation process not completed
Active only if auto-negotiation is enabled, else 0
Same as RN19_AUXSS[15] and RN01_STATS[5]
1 -> AN ack completed
0 -> AN ack not yet completed
Held high until tx is disabled or auto-negotiation is
restarted
1 -> AN first ack received
0 -> AN first ack not yet received
Held high until tx is disabled or auto-negotiation is
restarted
1 -> Auto-negotiation in ability detect state
0 -> Auto-negotiation not in ability detect state
Same as RN19_AUXSS[12]
SUPER ISOLATE:
1 -> MII and RX isolated
0 -> Normal operation
All MII inputs are ignored, all MII outputs are tri-stated, no
link pulses generated.
Same effect setting to 1 both RN00[10] and RN13[5].
---
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Doc ID 17049 Rev 1
Description
Registers and descriptors description
Default
00b
00b
0
0
0
0
0
0
0
0
0
0
0
0
Type
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Type
35/58
SC
P
P
-
-
-
-
-
-
-
-
-
-
-