ST802RT1B datasheet(37/58 Pages) STMICROELECTRONICS

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ST802RT1A, ST802RT1B

Registers and descriptors description

Doc ID 17049 Rev 1

37/58

Table 30.

RS1B [0d27, 0x1B]: Misc status/error/test shadow register

Bit

Bit name

Description

Default

Type

MLT3 Detect

1 -> MLT3 enabled with no errors (TX100 only)

0 -> MLT3 disabled or MLT3 error

0RO

14:12

TX Cable

Length

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

000b

RESERVED

NOT USED

LED Test

control

1 -> LED frequencies up by 8192 times

0 -> Normal operation

0RW

Descrambler

Locked

1 -> Descrambler locked on RX stream

0 -> Descrambler not locked

0RO

False Carrier

Detect

1 -> False carrier detected

0 -> No false carrier detected

0RO

Bad ESD

Detect

1 -> End-of-stream delimiter missing detected

0 -> No end-of-stream delimiter detected

0RO

RX Error

Detect

1 -> RX error detected (100BASE-X)

0 -> No RX errors detected

0RO

RESERVED

Not used

Lock Error

Detect

1 -> Lock error detected

0 -> No lock errors detected

0RO

MLT3 Error

Detect

1 -> MLT3 error detected

0 -> No MLT3 errors detected

0RO

2:0

RESERVED

Not used

ST802RT1B 数据表(PDF) 37 Page - STMicroelectronics

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