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Integrated Circuit Systems

ICS1886 Datasheet Preview

ICS1886 Datasheet

FDDI / Fast Ethernet PHYceiverTM

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Integrated
Circuit
Systems, Inc.
ICS1886
FDDI / Fast Ethernet PHYceiverTM
General Description
The ICS1886 is designed to provide high performance clock
recovery and generation for either 32.064 Mb/s, 34.368
Mb/s, 125 Mb/s or 139.264 Mb/s NRZ or NRZI serial data
streams. The ICS1886 is ideally suited for LAN transceiver
applications in either European or Japanese communication
environments.
The ICS1886 also operates at the 100Mbit Ethernet
frequency of 125 MHz. This is ideal for serial Ethernet data
applications where no serial to parallel conversion is
required.
Clock and data recovery is performed on an input serial data
stream or the buffered transmit data depending upon the state
of the loopback input. A continuous clock source will
continue to be present even in the absence of input data. All
internal timing is derived from either a low cost crystal or an
external clock module.
Features
• Data and clock recovery for: 32.064 Mb/s (Japan)
34.368 Mb/s (Europe - E3) 125 MHz (Ethernet)
139.264 Mb/s (Europe - E4)
• Clock multiplication from either a crystal, differential
or single-ended timing source
• Continuous clock in the absence of data
• No external PLL components
• Lock/Loss status indicator output
• Loopback mode for system diagnostics
• Selectable loop timing mode
• PECL drivers with settable sink current
The ICS1886 utilizes advanced CMOS phase-locked loop
technology which combines high performance and low
Pin Configuration
power at a greatly reduced cost.
Block Diagram
ICS1886RevC120996
28-Pin SOIC
PHYceiver is a trademark of Integrated Circuit Systems, Inc.




Integrated Circuit Systems

ICS1886 Datasheet Preview

ICS1886 Datasheet

FDDI / Fast Ethernet PHYceiverTM

No Preview Available !

ICS1886
Table 1 - Device Clock Selection
CS1
VSS
VSS
VDD
VDD
VSS
VSS
VDD
VDD
CS0
VSS
VDD
VSS
VDD
VSS
VDD
VSS
VDD
LOOP
VSS
VSS
VSS
VSS
VDD
VDD
VDD
VDD
INPUT
Tx Data
Tx Data
Tx Data
Tx Data
Rx Data
Rx Data
Rx Data
Rx Data
CLOCK FREQ
MODE
32.064 MHz
34.368 MHz
125.000 MHz
139.264 MHz
32.064 MHz
34.368 MHz
125.000MHz
139.264 MHz
Japan
Europe - E3
Ethernet
Europe - E4
Japan
Europe - E3
Ehternet
Europe - E4
REF FREQ or
CRYSTAL
4.008 MHz
4.296 MHz
25.000 MHz
17.408 MHz
4.008 MHz
4.296 MHz
25.000 MHz
17.408 MHz
Pin Descriptions
PIN
NUMBER
PIN NAME
1 VSS
2 LT~
3 CD~
4 TX+
5 TX-
6 VSS
7 IPRG1
8 RX-
9 RX+
10 LB~
11 LOCK
12 CS1
13 CS0
14 VSS
15 IPRG2
16 VSS
17 RD+
18 RD-
19 RC+
20 RC-
21 VDD
22 REF+
23 REF-
24 VDD
25 TC-
26 TC+
27 TD-
28 TD+
* Active Low Input.
TYPE
DESCRIPTION
Negative supply voltage.
Loop Timing mode select.*
Carrier Detect input.*
Positive Transmit serial data output.
Negative Transmit serial data output.
Negative supply voltage.
PECL Output stage current set (TX).
Negative Receive serial data input.
Positive Receive serial data input.
Loop Back mode select.*
Lock detect output.
Clock select 1 input.
Clock select 0 input.
Negative supply voltage.
PECL Output stage current set (TC, RC and RD).
Negative supply voltage.
Positive recovered data output
Negative recovered data output.
Positive recovered clock output.
Negative recovered clock output.
Positive supply voltage.
Positive reference clock/crystal input.
Negative reference clock/crystal input.
Positive supply voltage.
Negative Transmit clock output.
Positive Transmit clock output.
Negative Transmit data input.
Positive Transmit data input.
2


Part Number ICS1886
Description FDDI / Fast Ethernet PHYceiverTM
Maker Integrated Circuit Systems
Total Page 10 Pages
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