参数资料
型号: PIC16C923T-08I/PT
厂商: Microchip Technology
文件页数: 107/115页
文件大小: 0K
描述: IC MCU OTP 4KX14 LCD DVR 64TQFP
标准包装: 1,200
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 8MHz
连通性: I²C,SPI
外围设备: LCD,POR,PWM,WDT
输入/输出数: 25
程序存储器容量: 7KB(4K x 14)
程序存储器类型: OTP
RAM 容量: 176 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 6 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 64-TQFP
包装: 带卷 (TR)
配用: DVA16PQ640-ND - ADAPTER DEVICE FOR MPLAB-ICE
AC164023-ND - MODULE SKT PROMATEII 68TQFP
Micrel, Inc.
KSZ8873MLL/FLL/RLL
September 20, 2013
91
Revision 1.6
Static MAC Address Table
The KSZ8873 supports both a static and a dynamic MAC address table. In response to a destination address (DA) look
up, the KSZ8873 searches both tables to make a packet forwarding decision. In response to a Source Address (SA) look
up, only the dynamic table is searched for aging, migration and learning purposes.
The static DA look up result takes precedence over the dynamic DA look up result. If there is a DA match in both tables,
the result from the static table is used. The entries in the static table will not be aged out by the KSZ8873.
The static table is accessed by an external processor via the SMI, SPI or I
2C interfaces. The external processor performs
all addition, modification and deletion of static MAC table entries.
Table 16. Format of Static MAC Table (8 Entries)
Bit
Name
R/W
Description
Default
57-54
FID
R/W
Filter VLAN ID – identifies one of the 16 active VLANs
0000
53
Use FID
R/W
=1, Use (FID+MAC) for static table look ups
=0, Use MAC only for static table look ups
0
52
Override
R/W
=1, Override port setting “transmit enable=0” or
“receive enable=0” setting
=0, No override
0
51
Valid
R/W
=1, This entry is valid, the lookup result will be used
=0, This entry is not valid
0
50-48
Forwarding
Ports
R/W
These 3 bits control the forwarding port(s):
001, forward to port 1
010, forward to port 2
100, forward to port 3
011, forward to port 1 and port 2
110, forward to port 2 and port 3
101, forward to port 1 and port 3
111, broadcasting (excluding the
ingress port)
000
47-0
MAC Address
R/W
48-bit MAC Address
0x0000_0000_0000
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