BCM8012S
®
SGMII TO SGMII/SERDES/100BASE-FX TRANSCEIVER
SUMMARY OF BENEFITS
FEATURES
• Fully-integrated 1000BASE-X/100BASE-FX Ethernet
transceiver
• Ideal solution for interfacing to any type of SFP module.
• 10/100/1000BASE-T, 1000BASE-X, or 100BASE-FX.
• SGMII and SerDes MAC interface options
• Requires no airflow or heatsink.
• SGMII-to-SGMII support for SFP modules
• Provides compliance with PCI 2.2 and PC99/PC2000.
• On-chip low-voltage regulators
• Eases system level debug.
• Fully compliant with IEEE 802.3z standards
• Reduces system design constraints to meet EMI emissions
• 0.13µ CMOS—low power and cost
standards.
• Low power—less than 383 mW per port
• Operates with larger packets for wider range of packet
protocol support and improved efficiency.
• Line-side loopback
• Ease of manufacturing with JTAG support.
• Low EMI emissions
• Support for jumbo packets up to 10 KB
• IEEE 1149.1 (JTAG) boundary scan
• 100-pin FBGA packages
BCM8012S Block Diagram
SFP
Module
SFP Connector
1000Base-X
or 100Base-FX
Optical
Module
Strata or
XGS Switch
BCM5461S
RJ-45
SFP Connector
Transformer
SFP
Module
BCM8012S
OVERVIEW
SGOUT_P2+-
+- 2P_S_SGOUT
Secondary SerDes
(SGMII)
+- 2P_S_SGIN
+- 1P_S_SGOUT
Primary SerDes
(SGMII)
+- 1P_S_SGIN
SGIN_P2 +SGOUT_P1+SGIN_P1+-
XTALI
XTALO
Clock
Generator
RDAC
Bias
Generator
REG_SUP {2:1}
Symbol Decoder/
Aligner
LED_P1[1]/ANEN (LED1)
LED_P1[2]/INTR /FDX/SD (LED2)
LED_P2[1]/SPD0 (LED1)
LED_P2[2]/INTR/F 1000/SD (LED2)
LED Drivers
Voltage
Regulator
REG_OUT {2:1}
MII Registers
MDC_P1
MDIO_P1
MDC_P2
MDIO_P2
MII Management
Control
SGMIISEL[1:0]
BCM8012S
BCM8012S Block Diagram
In most switch designs, a few ports are targeted as uplink ports to connect
to servers, switches, or remote links. These connections can be via fiber
as 1000Base-SX, 1000Base-LX, or 100Base-FX, or via copper. In order
to accommodate these various interfaces, one or more SFP slots can be
designed into the switch and the user can plug an SFP module into the
slot that meets their specific requirement. This user configured solution
enables the switch manufacturer to make one box that addresses multiple
needs.
The BCM8012S addresses the specific problem of supporting multispeed SFP uplinks in Gigabit and Fast Ethernet designs. 1000Base-SX
and 1000Base-LX SFP modules require a SerDes interface to the SFP
module. 100Base-FX and 10/100/1000Base-T require an SGMII
interface in order to rate adapt to the lower speeds (less than 1 gigabit).
The BCM8012S can switch between any of these interfaces, depending
on the SFP module installed.
On the Switch/MAC side, the BCM8012S supports the SGMII interface.
In addition, the BCM8012S incorporates a number of functions that ease
the design process including internal regulators, low EMI emissions,
MAC-side and line-side loopback, and JTAG. Advanced features like
Super Isolate, which allows the start of auto-negotiation to be under
software control, and jumbo packet support to 10 KB, are also included.
The BCM8012S is rated for industrial temperature applications and is
available in both a 100-FBGA standard and lead-free package.
Broadcom®, the pulse logo, Connecting everything®, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
8012S-PB00-R
04/17/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: [email protected]
Web: www.broadcom.com