BCM5208KPF Broadcom, BCM5208KPF Datasheet - Page 33

• Manufacturer Part Number: BCM5208KPF
• Manufacturer: Broadcom

Specifications of BCM5208KPF

• Number Of Receivers: 4
• Data Rate: 10/100Mbps
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3.14V
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Lead Free Status / RoHS Status: Not Compliant

November 3, 1999
RESERVED BITS. The Reserved bits of the 100BASE-X Auxiliary Control Register must be written as “0” at all times.
Ignore the BCM5208 outputs when these bits are read.
100BASE-X AUXILIARY STATUS REGISTER
See Table 15 for an explanation of the bit descriptions for the 100BASE-X auxiliary status register.
FX MODE. The FX Mode is only enabled when, during a Hard or Soft Reset, the value derived from the SD± input pins
are driven with a valid differential signal level. Returns a “0” when both SD+ and SD- are simultaneously driven low during
LOCKED. The PHY will return a “1” in bit 9 when the de-scrambler is locked to the incoming data stream. Otherwise it will
return a “0”.
CURRENT 100BASE-X LINK STATUS. The PHY will return a “1” in bit 8 when the 100BASE-X link status is good.
Otherwise it will return a “0”.
REMOTE FAULT. The PHY will return a “1” when its link partner signals a far-end fault condition, otherwise returns a “0”.
DISCONNECT STATE. The PHY will return a “1” in bit 6 when the link is unstable and the carrier integrity monitor has
isolated the port. Otherwise it will return a “0”. This bit is qualified by 100BASE-X operation.
FALSE CARRIER DETECTED. The PHY will return a “1” in bit 5 of the extended status register if a false carrier has been
detected since the last time this register was read. Otherwise it will return a “0”.
Document 5208-DS03-R¥¥¥¥¥
the Hard or Soft Reset.
BIT
15:11
10
9
8
7
6
5
4
3
2
1
0
Note: R/W = Read/Write, RO = Read only, SC = Self Clear, LL = Latched Low, LH = Latched High, (LL and LH clear after
read operation)
NAME
Reserved
FX Mode
Locked
Current 100BASE-X
Link Status
Remote Fault
Disconnect State
False Carrier Detected
Bad ESD Detected
Receive Error Detected
Transmit Error Detected
Lock Error Detected
MLT3 Code Error Detected
Table 15: 100BASE-X Auxiliary Status Register (Address 17d, 11h)
R/W
RO
RO
RO
RO
RO
RO
RO
LH
RO
LH
RO
LH
RO
LH
RO
LH
RO
LH
B r o a d c o m C o r p o r a t i o n
DESCRIPTION
Ignore on Read
1 = 100BASE-FX mode
0 = 100BASE-TX or 10BASE-T mode
1 = descrambler locked
0 = descrambler unlocked
1 = link pass
0 = link fail
1 = remote fault detected
0 = no remote fault detected
1 = PHY link unstable, isolated by CIM
0 = PHY link stable
1 = false carrier detected since last read
0 =no false carrier since last read
1 = ESD error detected since last read
0 = no ESD error since last read
1 = receive error detected since last read
0 = no receive error since last read
1 = transmit error code received since last read
0 = no transmit error code received since last read
1 = lock error detected since last read
0 =no lock error since last read
1 = MLT3 code error detected since last read
0 = no MLT3 code error since last read
n BCM5208
DEFAULT
0
SD+/- PIN
0
0
0
0
0
0
0
0
0
0
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