Block Diagram - Broadcom BCM953128R8G Quick Start Manual

BCM953128R8G Quick Start Guide
Overview
This document describes how to bring up the Broadcom BCM953128R8G reference board.
Because there is no CPU in unmanaged mode application, the EEPROM is needed in this reference board to
configure switch BCM53128 when the board powers on. The EEPROM has been preprogrammed before it is
placed into the socket in the board.

Block Diagram

Figure 1 is a generalized block diagram for the BCM953128R8G reference board.
Port 8 Port 7
LED LED
D20 D21
Magnetics
J6
SW1
Loop
Detect
Switch
BROADCOM
®
December 13, 2010 • 953128R8G-QSG100-R
Port 6 Port 5
LED LED
D22 D23
J5
U13
BCM53128
U12
J7
U7
U8
Magnetics
1x 8 RJ45
Figure 1: BCM953128R8G Block Diagram
Port 3 Port 2
Port 4
LED LED
LED
D24 D25 D26
EEPROM
( on Socket )
J9
U9 U11
Magnetics Magnetics
Overview
Power
Port 1
LED
LED
D28
D27
Power
Regulator
J1
12 V
Power
Jack
Reference Board
Page 6