ACS401 Semtech Corporation, ACS401 Datasheet
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ACS401
Manufacturer Part Number
ACS401
Description
Optical Modem ic
Manufacturer
Semtech Corporation
Datasheet
1.ACS401.pdf
(8 pages)
* Two additional low speed handshake signals.
driver/receiver IC, supporting various user programmable, full-
Acapella Optical Modem IC
* Enables up to four full-duplex serial transmission channels
* Supports Ping Pong LED (PPLED) and LASER Duplex
* Link lengths up to 95 km with appropriate Laser.
* Maximum data rate 128 kbps - optimised for talk-set
* Typical 7 mA (average) current consumption, including
* Digital mode, allowing the user to add an external amplifier.
* Bit Error Rate (BER) of 10
The ACS401 is a complete optical-modem controller/
duplex, synchronous data rates to 128 kbps over a single fiber.
Communicating modems automatically maintain synchronis-
ation with each other such that the receive phase of one modem
is lined up with the transmit phase of the other, compensating for
the propagation delay presented by the link. Link lengths from
zero to maximum distance, up to 95 km, are catered for
automatically.
through a single fiber optic cable, providing eight virtual fiber
paths.
Devices (LDD) for single fiber applications or dual fiber
applications using low cost LED/LASER emitters and PIN
Diode receiver.
applications.
LASER drive current.
Also enables the ACS401 to be used in non-fiber applications.
RxD4
TxD1
TxD2
TxD3
TxD4
TxCL
RxD1
RxD2
RxD3
RxCL
VA+
VD+
GND
ACS401 Main Features:
XO1 XI1 XO2 XI2
Control Data
General Description:
Digital
Digital
Filter
Filter
HBT CLK9 ERRC ERRL
Decompress
Equivalent block diagram of ACS401.
Compress
FIFO
FIFO
Status
-9
Encoder
Decoder
3B4B
3B4B
DR(1:3) DM(1:3) DP(1:4)
4
Control Logic
3
PIN Receiver
LED Driver
4
TRC
PORB
CKC
LAP
LAN
PINP
PINN
GND
PPLED
CNT
XTAL
Single
Fiber