HFBR-4663 Agilent(Hewlett-Packard), HFBR-4663 Datasheet - Page 3

• Manufacturer Part Number: HFBR-4663
• Description: Single Chip 10BASE-FL Transceiver
• Manufacturer: Agilent(Hewlett-Packard)

Pin Connection
Pin Description
Pin
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Name
CLSN
COL+
COL-
C
SQEN/JABD
Rx+
Rx-
LBDIS
V
Tx+
Tx-
RTSET
RRSET
LMON
CC
TIMER
SQEN/JABD
LBDIS
V
Rx+
Tx+
Rx-
Tx-
CC
Indicates that a collision is taking place. Active low LED driver, open collector.
Event is extended with internal timer for visibility.
Gated 10 MHz oscillation used to indicate a collision, SQE test, or jabber.
Balanced differential line driver outputs that meet AUI specifications.
A capacitor from this pin to V
SQE Test Enable, jabber Disable. When tied low, SQE test is disabled, when tied
high SQE test is enabled. When tied to 2.0 V both SQE test and jabber are
disabled.
Manchester encoded receive data output to the local device. Balanced
differential line driver outputs that meet AUI specifications.
Loopback Disable. When this pin is tied to V
looped back to the AUI receive pair, and collision is disabled. When this pin is
tied to GND (normal operation) or left floating, the AUI transmit pair data is
looped back to the AUI receiver pair, except during collision.
+5 V power input.
Balanced differential line receiver inputs that meet AUI specifications. These
inputs may be transformer or capacitively coupled. The Tx input pins are
internally DC biased for AC coupling.
Sets the current driven output of the transmitter.
A 1% 61.9 k resistor tied from this pin to V
internal nodes.
Link Monitor “Low Light” LED status output. This pin is pulled low when the
voltage on the V
pin, and there are transitions on V
data. If either the voltage on the V
threshold or transitions cease on V
driver, open collector.
5
6
7
8
9
10
11
12
4
13
28 – PIN PCC Q – 28
3
14
TOP VIEW
2
15
IN
1
+, V
28
16
IN
27
17
- inputs exceed the minimum threshold set by the V
26
18
25
24
23
22
21
20
19
CC
V
AGND
V
V
V
GND
GND
determines the Link Monitor response time.
IN-
THADJ
REF
DC
IN
IN
IN
+, V
+, V
+, V
Function
IN
IN
IN
- indicating an idle signal or active
- inputs fall below the minimum
-, LMON will go high. Active low LED
CC
CC
, the AUI transmit pair data is not
sets the biasing currents for
THADJ
79