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參數(shù)資料
| 型號： | HFBR-4663 |
| 英文描述： | Single Chip 10BASE-FL Transceiver(單芯片10BASE-FL收發(fā)器) |
| 中文描述： | 單片上10BASE -佛羅里達(dá)州收發(fā)器（單芯片的10 Base -佛羅里達(dá)州收發(fā)器） |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 211K |
| 代理商： | HFBR-4663 |
3
Pin Connection
Pin Description
Pin
Name
1
CLSN
Function
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
CC
determines the Link Monitor response time.
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
CC
, the AUI transmit pair data is not
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
CC
sets the biasing currents for
internal nodes.
Link Monitor “Low Light” LED status output. This pin is pulled low when the
voltage on the V
IN
+, V
IN
- inputs exceed the minimum threshold set by the V
THADJ
pin, and there are transitions on V
IN
+, V
IN
- indicating an idle signal or active
data. If either the voltage on the V
IN
+, V
IN
- inputs fall below the minimum
threshold or transitions cease on V
IN
+, V
IN
-, LMON will go high. Active low LED
driver, open collector.
2
3
4
5
COL+
COL-
C
TIMER
SQEN/JABD
6
7
8
Rx+
Rx-
LBDIS
9
10
11
V
CC
Tx+
Tx-
12
13
RTSET
RRSET
14
LMON
SQEN/JABD
Rx+
Rx-
LBDIS
V
CC
Tx+
Tx-
5
6
7
8
9
10
11
25
24
23
22
21
20
19
V
IN-
AGND
V
THADJ
V
REF
V
DC
GND
GND
C
T
C
C
C
J
A
C
V
I
R
R
L
X
R
V
C
T
T
4
3
2
1
28
27
26
12
13
14
15
16
17
18
TOP VIEW
28 – PIN PCC Q – 28
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