- 您现在的位置：买卖IC网 > PDF目录368612 > S5N8947X (SAMSUNG SEMICONDUCTOR CO. LTD.) MCU for ADSL/Cable Modem PDF资料下载
参数资料
| 型号： | S5N8947X |
| 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： | 29/49页 |
| 文件大小： | 407K |
| 代理商： | S5N8947X |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页当前第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页
ELECTRONICS
S5N8947 (ADSL/Cable Modem MCU)
SAMSUNG ELECTRONICS
Page : 29
MagIC Team
6.7. DMA Controller
The S5N8947 has a two-channel general DMA controller, called the GDMA. The two-channel
GDMA performs the following data transfers without CPU intervention:
l
Memory-to-memory (memory to/from memory)
l
UART-to-memory (serial port to/from memory)
l
USB-to-memory (USB port to/from memory)
The on-chip GDMA can be started by software and/or by an external DMA request (nXDREQ).
Software can also be used to restart a GDMA operation after it has been stopped.
The CPU can recognize when a GDMA operation has been completed by software polling and/or
when it receives an appropriate internally generated GDMA interrupt. The S5N8947 GDMA controller
can increment or decrement source or destination addresses and conduct 8-bit (byte), 16-bit (half-word),
or 32-bit (word) data transfers.
System BUS
GDMA Channel 0
nDREQ
nDACK
GDMA Channel 1
nDREQ
nDACK
Port 14 Data
GDMA0
IOPCON [27:26]
nXDACK 0
IOPCON [29:28]
nXDACK 1
Port 15 Data
GDMA1
Mode Selection
Mode Selection
nXDREQ 1
USB
(to Memory)
UART
nXDREQ 0
USB
(from Memory)
Figure 10 GDMA controller block diagram
相关PDF资料 |
PDF描述 |
|---|---|
| S5N8950 | G.dmt ADSL Transceiver for CO and CPE |
| S5N8951 | G.dmt ADSL Analog Front End IC |
| S5N8951X | G.dmt ADSL Analog Front End IC |
| S5N8952 | ADSL Transceiver for NIC |
| S5N8952X | ADSL Transceiver for NIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| S5N8952X | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:ADSL Transceiver for NIC |
发布紧急采购，3分钟左右您将得到回复。