FPC402 QUAD PORT CONTROLLER

HOST

CONTROLLER

PORT 0

SCL

INT

SDA

SFP,

QSFP,

QSFP-DD,

OSFP

PORT 1

SFP,

QSFP,

QSFP-DD,

OSFP

PORT 2

PORT 3

I2C,

STATUS,

CONTROL

FPC402 QUAD PORT CONTROLLER

PORT 0

SFP,

QSFP,

QSFP-DD,

OSFP

PORT 1

SFP,

QSFP,

QSFP-DD,

OSFP

PORT 2

SFP,

QSFP,

QSFP-DD,

OSFP

PORT 3

SFP,

QSFP,

QSFP-DD,

OSFP

I2C,

STATUS,

CONTROL

SFP,

QSFP,

QSFP-DD,

OSFP

SFP,

QSFP,

QSFP-DD,

OSFP

PORT 0

PORT 1

PORT2

PORT 3

PORT 4

PORT 5

PORT 6

PORT 7

Copyright © 2017, Texas Instruments Incorporated

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to

change without notice.

FPC402

SNLS583 – JUNE 2017

FPC402 Quad Port Controller

1

1 Features

1

•

Control Signal Management and I2C Aggregation

Across Four Ports

•

Combine Multiple FPC402s to Control 56 Total

Ports Through a Single Host Interface

•

Eliminate Need for Discrete I2C Muxes, LED

Drivers, and High-Pin-Count FPGA/CPLD Control

Devices

•

Reduce PCB Routing Complexity by Handling All

Low-Speed Control Signals Close to the Port

•

Selectable I2C (up to 1 MHz) or SPI (up to 10

MHz) Host Control Interface

•

Automatic Prefetching of Critical, User-Specified

Data From the Modules

•

Broadcast Mode Write to All Ports Simultaneously

Across All FPC402 Controllers

•

Advanced LED Features for Port Status

Indication, Including Programmable Blinking and

Dimming

•

Customizable Interrupt Events

•

Separate Host-Side I/O Voltage: 1.8 V to 3.3 V

•

Small WQFN Package Enabling Placement on

Bottom Side of PCB Underneath Ports

2 Applications

•

ToR/Aggregation/Core Switch and Router

•

Wireless Infrastructure Base Band Unit and

Remote Radio Unit

•

Video Switch and Router

•

Storage Cards and Storage Racks

•

SFP, QSFP, QSFP-DD, OSFP, Mini-SAS HD Port

Management

3 Description

The FPC402 quad port controller serves as a low-

speed signal aggregator for common port types such

as SFP, QSFP, Mini-SAS HD, and others. The

FPC402 aggregates all low-speed control and I2C

signals across four ports and presents a single easy-

to-use management interface to the host (I2C or SPI).

Multiple FPC402s can be used in high-port-count

applications with one common control interface to the

host. The FPC402 is designed to allow placement on

the bottom side of the PCB, underneath the press fit

connector, to simplify routing. This localized control of

the low-speed signals in the ports cuts system BOM

costs by enabling the use of smaller IO count control

devices

(FPGAs,

CPLDs,

and

MCUs)

and

by

reducing routing layer congestion.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

FPC402

WQFN (56)

5.00 mm × 11.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Device Comparison

PART

NUMBER

ACCESSIBLE DOWNSTREAM

ADDRESSES

PIN

COMPATIBLE

FPC402

All valid I2C addreses

-

FPC401

MSA Addresses: 0xA0, 0xA2

Yes

Simplified Block Diagram