參數(shù)資料
型號: PIC18F2331-I/MM
廠商: Microchip Technology
文件頁數(shù): 9/119頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 4KX16 28QFN
產(chǎn)品培訓模塊: PIC18 J Series MCU Overview
標準包裝: 61
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,LVD,電源控制 PWM,QEI,POR,PWM,WDT
輸入/輸出數(shù): 24
程序存儲器容量: 8KB(4K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 768 x 8
電壓 - 電源 (Vcc/Vdd): 4.2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 5x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-VQFN 裸露焊盤
包裝: 管件
產(chǎn)品目錄頁面: 642 (CN2011-ZH PDF)
配用: AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
I3-DB18F4431-ND - BOARD DAUGHTER ICEPIC3
其它名稱: PIC18F2331-I/ML
PIC18F2331-I/ML-ND
Micrel, Inc.
KSZ8842-PMQL/PMBL
October 2007
106
M9999-100207-1.5
Static MAC Address Table
The KSZ8842-PMQL/PMBL supports both a static and a dynamic MAC address table. In response to a Destination
Address (DA) look up, The KSZ8842-PMQL/PMBL 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. These entries in the static table will not be aged out by the KSZ8842-
PMQL/PMBL.
Bit
Default
R/W
Description
57 – 54
0000
RW
FID
Filter VLAN ID - identifies one of the 16 active VLANs.
53
0
R/W
Use FID
1 =specifies the use of FID+MAC for static table look ups
0 = specifies only the use of MAC for static table look ups
52
0
R/W
Override
1 = overrides the port setting “transmit enable=0” or “receive enable=0”
setting.
0 = specifies no override
51
0
R/W
Valid
1 = specifies that this entry is valid, the look up result will be used
0 = specifies that this entry is not valid
50 – 48
000
R/W
Forwarding ports
These 3 bits control the forwarding port(s):
000 ,no forward
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)
47 – 0
0
R/W
MAC address
48 bits MAC Address
Table 12. Static MAC Table Format (8 Entries)
Examples:
1. Static Address Table Read (read the second entry at indirect address offset 0x01)
Write to reg. IACR with 0x1001 (set indirect address and trigger a read static MAC table operation)
Then
Read reg. IADR3 (static MAC table bits 57-48)
Read reg. IADR2 (static MAC table bits 47-32)
Read reg. IADR5 (static MAC table bits 31-16)
Read reg. IADR4 (static MAC table bits 15-0)
2. Static Address Table Write (write the eighth entry at indirect address offset 0x07)
Write to reg. IADR3 (static MAC table bits 57-48)
Write to reg. IADR2 (static MAC table bits 47-32)
Write to reg. IADR5 (static MAC table bits 31-16)
Write to reg. IADR4 (static MAC table bits 15-0)
Write to reg. IACR with 0x0007 (set indirect address and trigger a write static MAC table operation)
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