DP83950BVQB National Semiconductor, DP83950BVQB Datasheet - Page 21

• Manufacturer Part Number: DP83950BVQB
• Description: IC CTRLR RIC REPEATER 160-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83950BVQB

• Controller Type: Ethernet Repeater Interface Controller
• Interface: IEEE 802.3
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 380mA
• 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: *DP83950BVQB

Pin
No
MANAGEMENT BUS PINS
POWER AND GROUND PINS
EXTERNAL DECODER PINS
3 0 Pin Descriptions
Note TT
PCOMP
MRXC
MCRS
MRXD
Name
MEN
GND
RXM
V
Pin
e
CC
TTL compatible B
Driver
Type
TT
TT
TT
TT
TT
C
O Z
B Z
O Z
I O
e
O
O
I
Bi-directional C
MANAGEMENT RECEIVE CLOCK When asserted this signal provides a clock signal for the
MRXD serial data stream The MRXD signal is changed on the falling edge of this clock The
signal is asserted when a RIC is receiving data from one of its network segements Otherwise the
signal is inactive
MANAGEMENT CARRIER SENSE When asserted this signal provides an activity framing
enable for the serial output data stream (MRXD) The signal is asserted when a RIC is receiving
data from one of its network segments Otherwise the signal is an input
MANAGEMENT RECEIVE DATA When asserted this signal provides a serial data stream in NRZ
format The data stream is made up of the data packet and RIC status information The signal is
asserted when a RIC is receiving data from one of its network segments Otherwise the signal is
inactive
MANAGEMENT BUS OUTPUT ENABLE This output acts as an active high enable for an
external bus transceiver (if required) for the MRXC MCRS and MRXD signals When high the bus
transceiver should be transmitting on to the bus
PACKET COMPRESS This input is used to activate the RIC’s packet compress logic A low level
on this signal when MCRS is active will cause that packet to be compressed If PCOMP is tied
low all packets are compressed if PCOMP is tied high packet compression is inhibited
Positive Supply
Negative Supply
RECEIVE DATA MANCHESTER FORMAT This output makes the data in Manchester format
received by port N available for test purposes If not used for testing this pin should be left open
(Continued)
e
CMOS compatible OD
21
e
Open Drain I
Description
e
Input O
e
Output Z
e
TRI-STATE