HYC9088A_07 Datasheet, PDF (4/11 Pages) SMSC Corporation – ARCNET Twisted Pair and Coaxial Compatible High Impedance Transceiver HIT

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
DESCRIPTION OF PIN FUNCTIONS
SYMBOL
DESCRIPTION
NC
Not used. Make no connection to these pins.
VDD
-5 Volts power supply.
GND
Ground.
VCC
+5 Volts power supply.
RX
TPA, TPB,
TPC, TPD
PH-B/
SHIELD
PH-A/
CENTER
nPULSE2
DISABLE
TRANSMIT
nPULSE1
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.
Revision (02-16-07)
Page 4
DATASHEET
SMSC HYC9088A