21140中文资料PDF规格书
21140规格书详情
Description
The 21140 interfaces with the PCI bus using onchip control and status
registers (CSRs), and a shared CPU memory area that is set up mainly during
initialization、This minimizes the processor involvement in the 21140 operation
during normal reception and transmission、The 21140 is compliant with the
PCT Local Brs Specifeation, Revision 2.0,Bus traffic is also minimized by
ltering out received runt frames and by automatically retransmitting collided
frames without needing to repeat a fetch from shared memory:
On the network side, tbe 21140 provides two ports: a serial (SRL) 10-Mbys
Port and a media independent interface/symbol (MISYMD) 100-Mbys port.
The 10-Mbys port provides a direct interface to the external 10-Mb/s ffont-end
decoder (BNDEC), The 100-Mbys port supports two operational modes: a direct
interface to the external 100-Mb/s RNDEC and a full implementation of the
MIT standard. The 21140 includes the onchip physical coding sublayer (PC8)
and the scrambler for efficient 100BASE-T (CAT5 cable) implementation,It is
also capable of functioning in a full-duplex environment for both the 10-Mbys
and 100-Mb/s ports,
产品属性
- 产品编号:
21140
- 制造商:
Lumberg Automation
- 类别:
电缆组件 > 圆形电缆组件
- 包装:
散装
- 描述:
RSTS 8X-RSTS 8X-478/70 M
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
Digital Dynamics |
21+ |
PQFP |
4550 |
全新原装现货 |
询价 | ||
INTEL/英特尔 |
23+ |
NA/ |
3733 |
原装现货,当天可交货,原型号开票 |
询价 | ||
INTEL |
2016+ |
QFP |
6000 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
DIGITAL |
23+ |
MQFP |
20000 |
全新原装假一赔十 |
询价 | ||
99+ |
2020+ |
INTEL |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
Intel |
21+ |
QFP |
35200 |
一级代理/放心采购 |
询价 | ||
TE Connectivity |
2301+ |
胶壳 |
10000 |
全新、原装 |
询价 | ||
DIGITAL |
17+ |
MQFP |
9800 |
只做全新进口原装,现货库存 |
询价 | ||
DIGITAL |
23+ |
NA |
304 |
专做原装正品,假一罚百! |
询价 | ||
digital |
1995+ |
QFP |
700 |
询价 |