DESCRIPTION OF PIN FUNCTIONS
PIN NO.
1, 2, 5, 9
3
4, 13, 14,
17
6
7
8, 16, 15,
10
11
12
18
19
20
NAME
No Connect
Power
Supply
Ground
Power
Supply
Receive
Data
Test Points
Phase-B/
Shield
Phase-A/
Center
nPulse 2
Disable TX
nPulse 1
SYMBOL
NC
VDD
GND
VCC
RX
TPA, TPB,
TPC, TPD
PH-B/
SHIELD
PH-A/
CENTER
nPULSE2
DISABLE
TRANSMIT
nPULSE1
-5 Volts power supply.
Ground.
+5 Volts power supply.
Output. This signal carries the TTL receive pulse information
to the ARCNET LAN Controller Device.
Test points. Make no connection to these pins.
Output. Connect this signal to Twisted Pair Connector pin 3 or
the shield of the coaxial cable.
Output. Connect this signal to Twisted Pair Connector pin 2 or
the center of the coaxial cable.
Input. This signal is supplied by the ARCNET LAN Controller
Device.
Input. A high level on this signal disables the transmit section
of the HYC9088. It is normally connected to ground.
Input. This signal is supplied by the ARCNET LAN Controller
Device.
DESCRIPTION
Not used. Make no connection to these pins.
4
SMSC [ SMSC CORPORATION ]
