- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11594 > KSZ8873MLL AM (Micrel Inc)IC ETHERNET SWITCH 3PORT 64-LQFP PDF資料下載
參數(shù)資料
| 型號： | KSZ8873MLL AM |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 17/115頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ETHERNET SWITCH 3PORT 64-LQFP |
| 產(chǎn)品培訓(xùn)模塊： | KSZ8873 Ethernet Switches |
| 特色產(chǎn)品： | KSZ8873 Ethernet Switch Controller |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 控制器類型： | 以太網(wǎng)開關(guān)控制器 |
| 接口： | MII |
| 電源電壓： | 1.8V，2.5V，3.3V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-LQFP |
| 供應(yīng)商設(shè)備封裝： | 64-PQFP（10x10） |
| 包裝： | 托盤 |
| 其它名稱： | 576-3633 KSZ8873MLL AM-ND KSZ8873MLLAM |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當(dāng)前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁
2011 Microchip Technology Inc.
Preliminary
DS41609A-page 113
PIC16(L)F1508/9
11.2
PORTA Registers
PORTA is a 6-bit wide, bidirectional port. The
corresponding data direction register is TRISA
(Register 11-3). Setting a TRISA bit (= 1) will make the
corresponding PORTA pin an input (i.e., disable the
output driver). Clearing a TRISA bit (= 0) will make the
corresponding PORTA pin an output (i.e., enables
output driver and puts the contents of the output latch
on the selected pin). The exception is RA3, which is
input only and its TRIS bit will always read as ‘1’.
Example 11-1 shows how to initialize an I/O port.
Reading the PORTA register (Register 11-2) reads the
status of the pins, whereas writing to it will write to the
PORT latch. All write operations are read-modify-write
operations. Therefore, a write to a port implies that the
port pins are read, this value is modified and then
written to the PORT data latch (LATA).
The TRISA register (Register 11-3) controls the
PORTA pin output drivers, even when they are being
used as analog inputs. The user should ensure the bits
in the TRISA register are maintained set when using
them as analog inputs. I/O pins configured as analog
input always read ‘0’.
11.2.1
ANSELA REGISTER
The ANSELA register (Register 11-5) is used to
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELA bit high will cause all
digital reads on the pin to be read as ‘0’ and allow
analog functions on the pin to operate correctly.
The state of the ANSELA bits has no effect on digital
output functions. A pin with TRIS clear and ANSEL set
will still operate as a digital output, but the Input mode
will be analog. This can cause unexpected behavior
when executing read-modify-write instructions on the
affected port.
EXAMPLE 11-1:
INITIALIZING PORTA
11.2.2
PORTA FUNCTIONS AND OUTPUT
PRIORITIES
Each PORTA pin is multiplexed with other functions. The
pins, their combined functions and their output priorities
are shown in Table 11-2.
When multiple outputs are enabled, the actual pin
control goes to the peripheral with the highest priority.
Analog input functions, such as ADC and comparator
inputs, are not shown in the priority lists. These inputs
are active when the I/O pin is set for Analog mode using
the ANSELx registers. Digital output functions may
control the pin when it is in Analog mode with the
priority shown below in Table 11-2.
Note:
The ANSELA bits default to the Analog
mode after Reset. To use any pins as
digital general purpose or peripheral
inputs, the corresponding ANSEL bits
must be initialized to ‘0’ by user software.
BANKSEL PORTA
;
CLRF
PORTA
;Init PORTA
BANKSEL LATA
;Data Latch
CLRF
LATA
;
BANKSEL ANSELA
;
CLRF
ANSELA
;digital I/O
BANKSEL TRISA
;
MOVLW
B'00111000' ;Set RA<5:3> as inputs
MOVWF
TRISA
;and set RA<2:0> as
;outputs
TABLE 11-2:
PORTA OUTPUT PRIORITY
Pin Name
Function Priority(1)
RA0
ICSPDAT
DACOUT1
RA0
RA1
RA2
DACOUT2
CLC1(2)
C1OUT
PWM3
RA2
RA3
None
RA4
CLKOUT
SOSCO
RA4
RA5
SOSCI
RA5
Note 1:
Priority listed from highest to lowest.
2:
Default pin (see APFCON register).
3:
Alternate pin (see APFCON register).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PIC16LF1825-E/ML | MCU PIC 14KB FLASH 16QFN |
| PIC16F57-I/SP | IC MCU FLASH 2KX12 28-DIP |
| PIC16F630T-I/ST | IC MCU FLASH 1KX14 14TSSOP |
| KSZ8841-32MQL | IC MAC CTRLR 32BIT 128-PQFP |
| PIC16F631-I/ML | IC PIC MCU FLASH 1KX14 20QFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KSZ8873MLL-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 3-Port Fast Ethernet Switch with 1x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
| KSZ8873MLLI | 功能描述:以太網(wǎng) IC 3-Port Fast Ethernet Switch with 1x RMII Interface (Industrial Grade, Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8873MLLJ | 功能描述:以太網(wǎng) IC 3-Port Fast Ethernet Switch with 1x RMII Interface (Extended Temp) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8873MML | 功能描述:以太網(wǎng) IC 3-Port Fast Ethernet Switch with 2x MII Interface, Lead Free RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8873MML-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 3-Port Fast Ethernet Switch with 2x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。