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参数资料
| 型号： | S5N8947 |
| 厂商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | MCU for ADSL/Cable Modem |
| 中文描述： | 单片机为ADSL / Cable Modem的 |
| 文件页数： | 25/49页 |
| 文件大小： | 407K |
| 代理商： | S5N8947 |
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ELECTRONICS
S5N8947 (ADSL/Cable Modem MCU)
SAMSUNG ELECTRONICS
Page : 25
MagIC Team
6.4. Ethernet Controller
The S5N8947 has an Ethernet controller which operates at either 100/10-Mbits per second in half-
duplex or full-duplex mode. In half-duplex mode, the controller supports the IEEE 802.3 Carrier Sense
Multiple Access with Collision Detection (CSMA/CD) protocol. In full-duplex mode, it supports the IEEE
802.3 MAC Control Layer, including the Pause operation for flow control.
6.4.1. Block Diagram
S
Y
S
T
E
M
B
U
S
B
D
I
M
I
I
/
10
M
b
p
s
7
-
W
i
r
e
BDMA Tx
Buffer
Controller
BDMA Tx
Buffer
(64 words)
Bus Arbiter/
Controller
BDMA Rx
Buffer
(64 words)
BDMA Rx
Buffer
Controller
CAM
Contents
Memory
(32-words)
BDMA
control and
status
register
MAX Tx
Buffer
(80 bytes)
MAX Tx
Buffer
Controller
MAC
MAX Rx
Buffer
(16 bytes)
MAX Rx
Buffer
controller
Address
CAM
Interface
and
comparator
Flow
Controller
CRC
Checker
MAC control
and status
register
Station
Manager
BDMA+SBUS I/F
32
32
32
32
32
32
8
8
Figure 7 Ethernet controller block diagram
6.4.2.
Features and Benefits
The most important features and benefits of the S5N8947 Ethernet controller are follows :
l
Cost-effective connection to an external Repeater Interface Controller(RIC)/Ethernet backbone
l
Buffered DMA (BDMA) engine using Burst mode
l
BDMA Tx/Rx buffers (256 bytes/256 bytes)
l
MAC Tx/Rx FIFOs (80 bytes/16 bytes) to support re-transmit after collision without DMA request
and to handle DMA latency
l
Data alignment logic
l
Supports for old and new media (compatible with existing 10-Mbit/s networks)
l
Full IEEE 802.3 compatibility for existing applications
l
Provides a standard Media Independent Interface (MII)
l
Provides an external 7-wire interface, also.
相关PDF资料 |
PDF描述 |
|---|---|
| S5N8947X | MCU for ADSL/Cable Modem |
| S5N8950 | G.dmt ADSL Transceiver for CO and CPE |
| S5N8951 | G.dmt ADSL Analog Front End IC |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S5N8947X | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:MCU for ADSL/Cable Modem |
| S5N8950 | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:G.dmt ADSL Transceiver for CO and CPE |
| S5N8951 | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:G.dmt ADSL Analog Front End IC |
| S5N8951X | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:G.dmt ADSL Analog Front End IC |
| S5N8952 | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:ADSL Transceiver for NIC |
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