DP83953VUL National Semiconductor, DP83953VUL Datasheet - Page 57

• Manufacturer Part Number: DP83953VUL
• Description: IC CTRLR RIC REPEATER 160-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83953VUL

• Controller Type: Ethernet Repeater Interface Controller
• Interface: IEEE 802.3
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 870mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-MQFP, 160-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83953VUL

7.0 RIC2A Registers
Port Real Time Status Registers (Address 01H to 0DH)
D(5,4)
Bit
D0
D1
D2
D3
D6
D7
DISPT
R/W
R/W
R/W
R/W
R/W
R
R
R
D7
PTYPE0
PTYPE1
Symbol
GDLNK
DISPT
PART
SQL
COL
REC
SQL
D6
(Continued)
PTYPE1
a
Good link
0: Link pulses are being received by the port.
1: Link pulses are not being received by the port logic.
Note: Writing a 1 to this bit will cause the 10Base-T transceiver not to transmit or monitor the reception of
link pulses. If port 1 (AUI port) is read, then this bit is undefined.
Collision
0: A collision is happening or has occurred during the current packet.
1: No collisions have occurred as yet during this packet.
Receive
0: This port is now or has been the receive source of packet or collision information
for the current packet.
1: This port has not been the receive source during the current packet.
Partition
0: This port is partitioned.
1: This port is not partitioned.
Writing a logic one to this bit forces segment reconnection and partition state
machine reset. Writing a zero to this bit has no effect.
Partition Type 0
Partition Type 1
The partition type bits provide information specifying why the port is partitioned.
Squelch Levels
0: Port operates with normal IEEE receive squelch level.
1: Port operates with reduced receive squelch level.
Note 1: In addition to hysteresis that DP83950 RIC provides on normal receive squelch, DP83953 RIC2A
provides a hysteresis when operating in the reduced squelch level mode.
Disable Port
0: Port operates as defined by repeater operations.
1: All port activity is prevented.
D5
PTYPE1
0
0
1
1
PTYPE0
PTYPE0
D4
0
1
0
1
57
Consecutive collision limit reached
Excessive length of collision limit reached
Failure to see data loopback from transceiver in monitored
window
Processor forced reconnection
PART
D3
Description
REC
D2
Information
COL
D1
GDLNK
D0
www.national.com