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부품번호 | AC208 기능 |
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기능 | 2.5V 10/100-TX 5-Port Repeater/4+1 Uplink Port | ||
제조업체 | ETC | ||
로고 | |||
전체 30 페이지수
ADVANCE DATA SHEET
n AC206
2.5V 10/100-TX 5-Port Repeater/4+1 Uplink Port with Bridge Controller
GENERAL DESCRIPTION
The AC206 is a 5-port 10/100Mbps integrated repeater with
a bridge controller. The AC206 provides a low cost, inte-
grated solution for unmanaged repeater applications.
The AC206 is a Class II Repeater that is fully compliant with
IEEE 802.3 standards. The device provides five 10/100
Mbps copper media ports. In addition, the 5th port supports
a 10/100 TX interface for uplink functionality. The AC206
also provides one selectable MII/7-wire interface. The MII/
7-wire interface can be connected to a MAC or a Switch for
managed repeater stack or hybrid Switch/Repeater Appli-
cations.
The AC206 provides 10/100 Mbps auto-negotiation and
parallel detection for all ports. The option to configure the
technology for each port via EEPROM interface is avail-
able. The AC206 provides two internal repeater state ma-
chines, one operates at 10Mbps and the other at 100Mbps.
Once the technology is set, the device automatically con-
nects each port to the appropriate repeater segment.
The AC206 provides two backplanes for expansion. One
operates at 10Mbps, the other at 100Mbps. Up to 20 ports
can be connected into one repeater using backplane buses.
The AC206 integrates repeater controller and switch engine
technologies with “store and forward” forwarding mecha-
nisms.
FEATURES
• Low power (<1A total current consumption when used
with 1.25;1 transformer) five port 10/100 Mbps inte-
grated repeater controller with built-in bridge function.
• MDC/MDIO for control/status.
• Five integrated 10/100 Mbps IEEE 802.3u compliant
transceivers.
• Fully integrated adaptive equalizer provides phase/
amplitude compensation for various cable lengths up to
30dB @ 100MHz.
• Patent-pending DC restoration technique reduces off-
set/baseline wander.
• IEEE 802.3u-compliant auto-negotiation.
• Unique scrambler seed for all port for better EMI.
• Supports Media Independent Interface (MII) or 7-wire
interface to connect to MAC.
• Cascadable backplanes compatible with AC108RM,
AC108RU and AC208.
• Non-blocking 10/100M bridge with MAC controller and
switching engine. One segment of a bridge is fixed to
100Mbps while the other can be configured for 10 or
100Mbps.
• Bridge functions include:
- Embedded 32K bytes memory for address table and
packet buffer.
- Local MAC address filtering.
- XOR hashing scheme.
- Short routing decision time.
- Forwarding schemes: store-and-forward.
- Address table up to 1K entries.
• Programmable LED display for activity, link, speed, par-
tition, utilization, and collision rate.
• Advanced power management includes:
- Each port can be turned off independently.
- Standby mode, which reduces power when the port
is not connected.
• Low power 2.5V 0.25µm CMOS implementation with
128-pin QFP package.
• Input tolerance to 3.3V
10M R BP
100M R BP
M II/
7 -W ire /
R v -M II
2 5 6 K b its
RAM
M II
B rid g e
T o R v -M II
M II
100M R B P
10M R BP
R _100
R _10
RBP
M
U 7 W ire
X
R v -M II
10M
100M
M II
...
M UX
...
PPPPP
HHHHH
YYYYY
Figure 1:
(T X 0 ) (T X 1 ) (T X 2 )
Functional Block Diagram
(T X 3 )
(T X 4 )
U p L in k
16215 Alton Parkway • P.O. Box 57013 • Irvine, California 92619-7013 • Phone: 949-450-8700 • Fax: 949-450-8710
AC206-DS03-R
06/19/01
I AC206
Advance Data Sheet
06/19/01
Learning Process..................................................................................................................................... 8
Aging Time .............................................................................................................................................. 8
Forwarding Scheme ................................................................................................................................ 8
Buffer Management and Queues ............................................................................................................ 9
Section 2: Pins................................................................................................................... 11
Pin Descriptions .........................................................................................................................................11
LED Display/Configuration/PROM Interface..........................................................................................16
Section 3: Register Descriptions ..................................................................................... 19
Register Description...................................................................................................................................19
Port Status Register ..............................................................................................................................20
Initial Repeater Configuration Register..................................................................................................21
Bridge Control Register .........................................................................................................................22
PHY Registers .............................................................................................................................................23
Control Register.....................................................................................................................................23
Status Register ......................................................................................................................................24
PHY Identifier 1 Register .......................................................................................................................25
PHY Identifier 2 Register .......................................................................................................................25
Auto-Negotiation Advertisement Register .............................................................................................25
Auto-Negotiation Link Partner Ability Register ......................................................................................26
Auto-Negotiation Expansion Register....................................................................................................26
Auto-Negotiation Next Page Transmit Register.....................................................................................26
BT Control Register ...............................................................................................................................27
Interrupt Control/Status Register ...........................................................................................................28
Diagnostic Register ...............................................................................................................................28
Test Register .........................................................................................................................................29
Cable Length Register...........................................................................................................................29
Receive Error Count ..............................................................................................................................29
Power Management Register ................................................................................................................30
Operation Mode Register ......................................................................................................................30
CRC for Recent Received Packet .........................................................................................................31
LED Effect Register ....................................................................................................................................31
LED Effect with Partition/Isolation Event ...............................................................................................31
LED Effect with Link Event ....................................................................................................................31
LED Effect with Activity (CRS) Event ....................................................................................................32
LED Effect with Auto-Negotiating Event ................................................................................................32
Page iv Table of Contents
Broadcom
Document AC206-DS03-R
4페이지 Advance Data Sheet
06/19/01
LIST OF FIGURES
I AC206
Figure 1: Functional Block Diagram .....................................................................................................................i
Figure 1: Exclusive or Hashing Algortithm.......................................................................................................... 7
Figure 2: Address Learning and Recognition ..................................................................................................... 8
Figure 3: Basic Memory Management Concept ................................................................................................. 9
Figure 4: LED Display Matrix............................................................................................................................ 35
Figure 5: Power on Reset................................................................................................................................. 41
Figure 6: Management Data Interface Timing .................................................................................................. 42
Figure 7: 7-Wire Input Timing ........................................................................................................................... 43
Figure 8: 7-Wire Output Timing ........................................................................................................................ 44
Figure 9: 100BASE-TX MII Input Timing .......................................................................................................... 45
Figure 10: 100BASE-TX MII Output Timing ..................................................................................................... 46
Figure 11: 10BASE-TX MII Input Timing .......................................................................................................... 47
Figure 12: 10BASE-TX MII Output Timing ....................................................................................................... 48
Figure 13: 100Mbps RBP Receive/Transmit Timing ........................................................................................ 49
Figure 14: 10Mbps RBP Receive/Transmit Timing .......................................................................................... 50
Figure 15: EEPROM Interface Timing .............................................................................................................. 51
Figure 16: 10/100BASE-TX RvMII Output Timing ............................................................................................ 52
Figure 17: 10/100BASE-TX RvMII Input Timing............................................................................................... 52
Figure 18: LED Timing...................................................................................................................................... 53
Figure 19: Application Termination................................................................................................................... 54
Figure 20: 128-pin PQFP.................................................................................................................................. 55
Document AC206-DS03-R
Broadcom
List of Figures Page vii
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