ML4663 Datasheet, PDF (1/15 Pages) Micro Linear Corporation – Single Chip 10BASE-FL Transceiver

March 1997
ML4663
Single Chip 10BASE-FL Transceiver
GENERAL DESCRIPTION
FEATURES
The ML4663 single-chip 10BASE-FL transceiver integrates
both a ML4662 10BASE-FL transceiver with a ML4622
fiber optic data quantizer to implement a highly integrated
solution for 10BASE-FL transceivers. The ML4663 offers a
standard IEEE 802.3 AU interface that allows it to be
directly connected to industry standard manchester
encoder/decoder chips or an AUI connector.
s Single chip solution for 10BASE-FL internal or external
Medium Attachment Units (MAUs)
s Incorporates an AU interface
s Highly stable data quantizer with 55dB input
dynamic range
s Input sensitivity as low as 2mV_P-P
The ML4663 provides a highly integrated solution that
requires a minimal number of external components, and is
compliant to the IEEE 802.3 10BASE-FL standard. The
transmitter offers a current drive output that directly drives
a fiber optic LED transmitter. The receiver offers a highly
stable fiber optic data quantizer capable of accepting
input signals as low as 2mV_P-P with a 55dB dynamic
range.
s Current driven fiber optic LED driver for accurate
launch power
s Single +5 volt supply
s No crystal or clock required
s Five network status LED outputs
Please ^{See ML4668 for New Designs The transmitter automatically inserts 1MHz signal during}
idle time and removes this signal on reception. Low Light
is continuously monitored for both activity as well as
power level. Five LED status indicators monitor error
conditions as well as transmissions, receptions and
collisions.
BLOCK DIAGRAM
SQEN/JABD
5
Tx+ 10
Tx– ₁₁
AUI
RECEIVER
V_CCTx
(+5V)
17
+5V
RTSET
12
GND
20
FIBER OPTIC
LED
DRIVER
AV_CC
27
18 TxOUT
Tx
SQUELCH
1MHz IDLE
SIGNAL
JABBER
LED
DRIVERS
15 _XMT
16 _RCV
1 CLSN
28 JAB
14 LMON
COL+ 2
COL– 3
AUI
DRIVER
Rx+ 6
Rx– 7
AUI
DRIVER
SQE
10MHz GATED
OSCILLATOR
Tx
LOOPBACK
MUX
Rx
RECEIVE SQUELCH
AMP
CMP
∫
19
GND
9
V_CC
(+5V)
13
8
RRSET LBDIS
+5V
24
AGND
LINK DETECT
4
C_TIMER
BIAS
26 V_IN+
25 V_IN–
V_REF
21 V_DC
22 V_REF
23 V_THADJ
1