參數(shù)資料
型號: PIC16F1508-I/P
廠商: Microchip Technology
文件頁數(shù): 71/123頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 7KB FLASH 20-PDIP
標(biāo)準(zhǔn)包裝: 22
系列: PIC® XLP™ 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 17
程序存儲器容量: 7KB(4K x 14)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 12x10b,D/A 1x5b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
Micrel, Inc.
KSZ8873MLLJ
September 2011
51
M9999-091911-1.8
Bit
Name
R/W
Description
Default
2
Huge Packet
Support
R/W
=1, Will accept packet sizes up to 1916 bytes (inclusive). This bit
setting will override setting from bit 1 of this register.
=0, The max packet size will be determined by bit 1 of this register.
0
1
Legal
Maximum
Packet Size
Check Enable
R/W
=0, Will accept packet sizes up to 1536 bytes (inclusive).
=1, 1522 bytes for tagged packets, 1518 bytes for untagged
packets. Any packets larger than the specified value will be
dropped.
0
Reserved
R/W
Reserved
Do not change the default value.
0
Register 5 (0x05): Global Control 3
Bit
Name
R/W
Description
Default
7
802.1Q VLAN
Enable
R/W
=1, 802.1Q VLAN mode is turned on. VLAN table needs to set up
before the operation.
=0, 802.1Q VLAN is disabled.
0
6
IGMP Snoop
Enable on
Switch MII
Interface
R/W
=1, IGMP snoop is enabled. All IGMP packets will be forwarded to
the Switch MII port.
=0, IGMP snoop is disabled.
0
5
Reserved
RO
Reserved
Do not change the default values.
0
4
Reserved
RO
Reserved
Do not change the default values.
0
3
Weighted
Fair Queue
Enable
R/W
=0, Priority method set by the registers 175-186 bit [7]=0 for port 1,
port 2 and port 3.
=1, Weighted Fair Queueing enabled. When all four queues have
packets waiting to transmit, the bandwidth allocation is q3:q2:q1:q0
= 8:4:2:1.
If any queues are empty, the highest non-empty queue gets one
more weighting. For example, if q2 is empty, q3:q2:q1:q0 becomes
(8+1):0:2:1.
0
2
Reserved
RO
Reserved
Do not change the default values.
0
1
Reserved
RO
Reserved
Do not change the default values.
0
Sniff Mode
Select
R/W
=1, Will do RX AND TX sniff (both source port and destination port
need to match)
=0, Will do RX OR TX sniff (either source port or destination port
needs to match). This is the mode used to implement RX only sniff.
0
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