DP83955AV National Semiconductor, DP83955AV Datasheet - Page 30

• Manufacturer Part Number: DP83955AV
• Description: IC CTRLR RIC REPEATER 100-PQFP
• Manufacturer: National Semiconductor
• Series: LERIC™r

Specifications of DP83955AV

• Controller Type: LitE Repeater Interface Controller
• Voltage - Supply: 5V
• Current - Supply: 250mA
• Mounting Type: Surface Mount
• Package / Case: 84-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Operating Temperature: -
• Interface: -
• Other names: *DP83955AV

Name
Pin
5 0 Functional Description
D0
D1
D2
D3
D4
D5
D6
D7
Programming
MIN MAX
Function
EPOLSW
TXONLY
BYPAS1
BYPAS2
CCLIM
Resv
Resv
Effect When
Not Selected
Permitted
Permitted
Selected
Minimum
Bit is 0
Mode
Not
Not
TABLE 5-2 Pin Definitions for Options in the MLOAD Operation
63
Effect When
Not Selected
Maximum
Required
Required
Selected
Bit is 1
(Continued)
Mode
31
These configuration bits select which of the repeater ports (numbers 2
to 7) are configured to use the on-chip internal 10BASE-T transceivers
or the external transceiver interface The external transceiver interface
operates using AUI compatible signal levels
Enables the polarity switching of the receive squelch upon detection of
polarity reversal of the incoming data
This configuration bit allows the on-chip partition algorithm to restrict
segment reconnection as described in the Partition State Machine
The partition specification requires a port to be partitioned after a certain
number of consecutive collisions The LERIC has two values available
to allow users to customize the partitioning algorithm to their
environment Please refer to the Partition State Machine in data sheet
section 7 3
The operation of the display update block is controlled by the value of
this configuration bit as described in the Display Update Cycles section
BYPAS2
30
0
0
1
1
BYPAS1
0
1
0
1
All ports (2 to 7) use the external
Transceiver Interface
Ports 2 and 3 use the external interface 4
to 7 use the internal 10BASE-T
transceivers
Ports 2 to 5 use the external interface 6
and 7 use the internal 10BASE-T
transceivers
All ports (2 to 7) use the internal
10BASE-T transceivers
Function
Information