dm9301 ETC-unknow, dm9301 Datasheet - Page 5

• Manufacturer Part Number: dm9301
• Description: 100mbps Ethernet Fiber/twisted Pair Single Chip Media Converter
• Manufacturer: ETC-unknow

Pin Description
Final
Version: DM9301-DS-F02
May 8, 2000
Media Interface
Clock and Misc. Interface
Pin No.
13, 14
24, 25
18, 19
22, 23
1, 2
27
28
30
8
9
PECLTXO-,
PECLTXO+
PECLRXI-,
PECLRXI+
OSC/XTL#
PECLSD-,
Pin Name
PECLSD+
TPTXO-,
TPTXO+
OSCI/X1
TPRXI+,
BGRET
BGREF
TPRXI-
X2
100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter
I/O
O
O
O
I
I
I
I
I
I
I
100Mbps-TX Differential Input Pair:
These pins are differential receive input for 100BASE-
TX. They are capable of receiving 100BASE-TX MLT-3
data.
100BASE-TX Differential Output Pair:
These outputs drive MLT-3 encoded data over 100Mbps
twisted pair cable and provide controlled rise and fall
times designed to filter the transmitter
reducing any associated EMI.
100BASE-FX PECL Receive Data Differential Pair:
These pins are differential receive input for 100BASE-
FX PECL. They are capable of receiving PECL
100BASE-FX NRZI data.
100BASE-FX Transmit Differential Output Pair:
These outputs drive NRZI encoded data for PECL FX
interface.
100BASE-FX PECL Signal detect:
These pins are differential signals that indicate to the
DM9301 that the Optical Module interface is detecting
valid optical energy.
Crystal or Oscillator Input:
This pin should connect to one side of a 25MHz, 50ppm
crystal if OSC/XTL#=0. This pin is the 25MHz, 50ppm
external TTL oscillator input, if OSC/XTLB=1.
Crystal Oscillator Output:
The other side of a 25MHz, 50ppm crystal should
connect to this pin if OSC/XTL#=0. Leave this pin open
if OSC/XTL#=1.
Crystal or Oscillator Selector Pin:
OSC/XTL#=0: An external 25MHz, 50ppm crystal
OSC/XTL#=1: An external 25MHz, 50ppm oscillator
Bandgap Voltage Reference Resistor:
It connects to a 6.49K , 1% error tolerance resistor
between this pin and BGRET pin 9 to provide an
accurate current reference for the chip.
Bandgap Return
Return pin for 6.49K resistor connection, DO NOT
CONNECT TO GROUND.
should connect to X1 and X2 pins.
should connect to X1 and left X2 pin
open.
Description
DM9301
output,
5