st802rt1a STMicroelectronics, st802rt1a Datasheet - Page 37

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

ST802RT1A, ST802RT1B
Table 30.
14:12
Bit
2:0
15
11
10
9
8
7
6
5
4
3
False Carrier
MLT3 Detect
Descrambler
RESERVED
RESERVED
RESERVED
MLT3 Error
Lock Error
Bit name
TX Cable
LED Test
Bad ESD
RX Error
Locked
Length
control
Detect
Detect
Detect
Detect
Detect
RS1B [0d27, 0x1B]: Misc status/error/test shadow register
1 -> MLT3 enabled with no errors (TX100 only)
0 -> MLT3 disabled or MLT3 error
TX100 CABLE LENGTH (m):
000 <= 20
001 = 20-40
010 = 40-60
011 = 60-80
100 =80-100
101 =100-120
110 = 120-140
111 =>140
NOT USED
1 -> LED frequencies up by 8192 times
0 -> Normal operation
1 -> Descrambler locked on RX stream
0 -> Descrambler not locked
1 -> False carrier detected
0 -> No false carrier detected
1 -> End-of-stream delimiter missing detected
0 -> No end-of-stream delimiter detected
1 -> RX error detected (100BASE-X)
0 -> No RX errors detected
Not used
1 -> Lock error detected
0 -> No lock errors detected
1 -> MLT3 error detected
0 -> No MLT3 errors detected
Not used
Doc ID 17049 Rev 1
Description
Registers and descriptors description
Default
000b
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
Type
37/58
LH
LH
LH
LH
LH
LH
-
-
-
-
-