- 您现在的位置：买卖IC网 > PDF目录16271 > 78Q8430EBST#DB (Maxim Integrated Products)EVAL BOARD 78Q8430 PDF资料下载
参数资料
| 型号： | 78Q8430EBST#DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 28/88页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD 78Q8430 |
| 标准包装： | 1 |
| 系列： | * |
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页当前第28页第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页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页
78Q8430 Data Sheet
DS_8430_001
34
Rev. 1.2
6.7.1
Address Filtering
The 78Q8430 CAM is loaded upon reset with a set of default rules for users who only want to use the
address filter feature (see Section 6.7.4). The following rules are intended as a template to provide
address-filtering functionality. They support four multicast and eight unicast address filters. The last
unicast address filter rule is configured by default as a promiscuous mode rule such that the address-filter
is in promiscuous mode right out of reset.
6.7.1.1
Promiscuous Mode Off
In promiscuous mode, all addresses are passed on to the host driver. This means that, as long as
promiscuous mode is enabled, none of the other address filters are effective. Promiscuous mode must
therefore be disabled before any address filtering can happen. The following procedure should be used
to deactivate promiscuous mode:
STEP 1. Change the Match Control field of rule 0x30 from MD to DROP. This will cause any frame with
an address that does not match any other address filter to be dropped.
6.7.1.2
Promiscuous Mode On
The promiscuous mode filter is a filter with all address bits masked as wildcard bits such that any address
will match. Turning promiscuous mode on and off is the same as changing the promiscuous mode filter
from a positive filter to a negative filter (see Section 6.7.1.5). The following procedure should be used to
activate promiscuous mode:
STEP 1. Change the Match Control field of rule 0x30 from DROP to MD. This will cause all frames to
pass the address filters.
6.7.1.3
Unicast Address Filters
The default CAM rule set supports eight unicast address filters. The first, unicast filter #0, is the
promiscuous mode filter and is reserved for that purpose. The remaining seven are general use. Each
filter has two components, the 48-bit address that it matches and a mask that defines which bits of the
address are relevant and which bits are wildcards. Each byte of each address filter has a rule assigned
to it. The following table summarizes the association of unicast filter bytes and CAM rules.
Table 24: CAM Rules Associated with Unicast Filter Bytes
Byte [0]
Byte [1]
Byte [2]
Byte [3]
Byte [4]
Byte [5]
U/C Filter #7
0x77
0x6F
0x5F
0x57
0x47
0x37
U/C Filter #6
0x76
0x6E
0x5E
0x56
0x46
0x36
U/C Filter #5
0x75
0x6D
0x5D
0x55
0x45
0x35
U/C Filter #4
0x74
0x6C
0x5C
0x54
0x44
0x34
U/C Filter #3
0x73
0x6B
0x5B
0x53
0x43
0x33
U/C Filter #2
0x72
0x6A
0x5A
0x52
0x42
0x32
U/C Filter #1
0x71
0x69
0x59
0x51
0x41
0x31
Note: Bytes are in network transmit order starting with Byte [0].
相关PDF资料 |
PDF描述 |
|---|---|
| CM453232-R18KL | INDUCTOR 180NH 700MA SMD |
| REC15-1205D/H3 | CONV DC/DC 15W 12VIN +/-05VOUT |
| VI-JWL-EZ-F3 | CONVERTER MOD DC/DC 28V 25W |
| A3BKB-2406G | IDC CABLE- ASR24B/AE24G/APK24B |
| REC15-2415D/H3 | CONV DC/DC 15W 24VIN +/-15VOUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 78Q8430STEM#DB | 功能描述:以太网开发工具 3-in-1 Silicon Delay Line RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: |
| 78-R3 | 功能描述:3M SCOTCHCAST REENTERABLE SIGNAL 制造商:3m 系列:* 零件状态:在售 标准包装:1 |
| 78-R4 | 功能描述:3M SCOTCHCAST REENTERABLE SIGNAL 制造商:3m 系列:* 零件状态:在售 标准包装:1 |
| 78RB02 | 功能描述:SWITCH 2 POS DIP RECESSED UNSLD RoHS:否 类别:开关 >> DIP 系列:78 特色产品:RDM Series Rotary DIP Switch 标准包装:70 系列:RDM 电路:十六进制 位置数:16 触点额定电压:0.1A @ 42VDC 触动器类型:用于工具旋转 触动器电平:凹槽式 安装类型:通孔 方向:顶部触动 可清洗:是 其它名称:EG4977-5RDMAR16PIT |
| 78RB02RA | 制造商:Grayhill 功能描述:DIP, 2 POS, FLUSH ACTUATOR, SPST, GOLD - Rail/Tube |
发布紧急采购，3分钟左右您将得到回复。