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S3028B AND HONEYWELL OPTICS HFM2553-001 APPLICATION NOTE
S3028B AND HONEYWELL OPTICS HFM2553-001 APPLICATION NOTE
S3028B
S3028B
Purpose:
This application note is to provide the designer with a short haul 850nm LAN application solution
INTRODUCTION
The AMCC S3028B SONET/SDH transceiver chip is a fully integrated serialization/deserialization SONET STS-
12/STM-4 (622.08 Mbps) interface device. This device is suitable for SONET-based ATM applications and can
be used in conjunction with AMCC’s S3027 Clock Recovery Device. The AMCC S3028B transceiver chip
provides the first stage of digital processing of a receive and a transmit SONET STS-12 bit-serial stream. In the
receive path, it converts a bit-serial data stream into a byte-serial data (parallel data) format and in the transmit
path, it converts byte-serial data (parallel data) into bit-serial data. Figure 1 shows an application block diagram
with a AMCC S3028B, S3027, PMC PM5355 and a Honeywell HFM2553-001. Figure 2 shows specifically the
design details. Combining these devices provides a Physical Media Dependent (PMD) layer for SONET/SDH/
ATM data transfer.
Figure 1. Typical Network Application Block Diagram
Honeywell
HFM2553-001
Fiber Optic
Transceiver
Module
Rx
PECL
CRU
AMCC
S3027
PECL
TTL
8
Parallel Input
Transceiver
AMCC
S3028B
TTL
8
Controller
PMC
PM5355
Parallel Output
Tx
PECL
Signal Connect Description
Figure 1 shows the block diagram of this solution.
1. The Honeywell fiber optic transceiver interfaces to the AMCC S3027 Clock Recovery Unit (CRU) via a PECL
bit-serial data stream.
2. After the clock is recovered from the bit-serial data stream the CRU transmits the PECL recovered clock and
PECL re-timed data to the AMCC S3028B transceiver.
3. The AMCC S3028B searches the incoming serial data stream for the frame and byte boundaries.
4. The AMCC S3028B transmits the bit-serial data converted to byte-serial data to the PMC PM5355 via an 8-bit
parallel TTL interface.
5. The PMC PM5355 transmits byte-serial data to the AMCC S3028B via an 8-bit parallel TTL interface.
6. The AMCC S3028B transmits the bit-serial data to the Honeywell fiber optic transceiver via a PECL interface.
1
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
