参数资料
型号: PIC16F1508T-I/SS
厂商: Microchip Technology
文件页数: 75/123页
文件大小: 0K
描述: IC MCU 8BIT 7KB FLASH 20-SSOP
标准包装: 1,600
系列: PIC® XLP™ 16F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C,LIN,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 17
程序存储器容量: 7KB(4K x 14)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 5.5 V
数据转换器: A/D 12x10b,D/A 1x5b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
Micrel, Inc.
KSZ8873MLLJ
September 2011
55
M9999-091911-1.8
Port Registers (Registers 16 – 95)
The following registers are used to enable features that are assigned on a per port basis. The register bit assignments are
the same for all ports, but the address for each port is different, as indicated.
Register 16 (0x10): Port 1 Control 0
Register 32 (0x20): Port 2 Control 0
Register 48 (0x30): Port 3 Control 0
Bit
Name
R/W
Description
Default
7
Broadcast
Storm
Protection
Enable
R/W
=1, Enable broadcast storm protection for ingress packets on port
=0, Disable broadcast storm protection
0
6
DiffServ
Priority
Classification
Enable
R/W
=1, Enable DiffServ priority classification for ingress packets (IPv4) on
port
=0, Disable DiffServ function
0
5
802.1p
Priority
Classification
Enable
R/W
=1, Enable 802.1p priority classification for ingress packets on port
=0, Disable 802.1p
0
4-3
Port-based
Priority
Classification
R/W
=00, Ingress packets on port will be
classified as priority 0 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
=01, Ingress packets on port will be
classified as priority 1 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
=10, Ingress packets on port will be
classified as priority 2 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
=11, Ingress packets on port will be
classified as priority 3 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
Note: “DiffServ”, “802.1p” and port priority can be enabled at the same
time. The OR’ed result of 802.1p and DSCP overwrites the port priority.
00
2
Tag Insertion
R/W
=1, When packets are output on the port, the switch will add 802.1p/q
tags to packets without 802.1p/q tags when received. The switch will not
add tags to packets already tagged. The tag inserted is the ingress
port’s “port VID”.
=0, Disable tag insertion
0
1
Tag
Removal
R/W
=1, When packets are output on the port, the switch will remove
802.1p/q tags from packets with 802.1p/q tags when received. The
switch will not modify packets received without tags.
=0, Disable tag removal
0
TXQ Split
Enable
R/W
=1, Split TXQ to 4 queue configuration. It cannot be enable at the same
time with split 2 queue at register 18, 34,50 bit 7.
=0, No split, treated as 1 queue configuration
0
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