NE83Q92A20 データシートの表示（PDF） - Philips Electronics
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NE83Q92A20 Datasheet PDF : 9 Pages
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Philips Semiconductors
Low-power coaxial Ethernet transceiver
Product specification
NE83Q92
PIN DESCRIPTIONS
PIN NO. PIN NO. PIN NO. SYMBOL
N PKG PLCC-20 PLCC-28
DESCRIPTION
1
2
2
3
2
3
CD+
CD–
Collision Outputs. Balanced differential line driver outputs which send a 10MHz signal to the
DTE in the event of a collision, jabber interrupt or heartbeat test. External pull-down resistors
are optional.
3
4
4
RX+ Receiver Outputs. Balanced differential line driver outputs which send the received signal to
6
8
12
RX– the DTE. External pull-down resistors are optional.
7
9
13
TX+ Transmitter Inputs. Balanced differential line receiver inputs which accept the transmission
8
10
14
TX– signal from the DTE and apply it to the coaxial cable at TXO, if it meets Tx squelch threshold.
9
12
15
HBE
Heartbeat Enable. The heartbeat function is disabled when this pin is connected to VEE and
enabled when connected to GND or left floating.
11
14
18
RR+ External Resistor. A 1kΩ (1%) resistor connected between these pins establishes the
12
15
19
RR– signaling current at TXO.
Receiver Input. This pin is connected directly to the coaxial cable. Received signals are
14
18
26
RXI equalized, amplified, and sent to the DTE through the RX± pins, if it meets Rx squelch
threshold.
15
19
28
TXO
Transmitter Output. This pin is connected directly (Thin Ethernet) or through an external
isolating diode (Ethernet) to the coaxial cable.
16
20
1
CDS
Collision Detect Sense. Ground sense connection for the collision detection circuitry. This
pin should be connected directly to the coaxial cable shield for standard Ethernet operation.
10
11
13
16
17
GND Positive Supply Pin.
4
5
13
5–7
5 to 11
16 – 17 20 to 25
VEE
Negative supply pins.
1
N/C Not used.
NOTE:
1. The IEEE 802.3 name for CD is CI; for RX is DI; for TX is DO.
1995 May 1
2
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