參數(shù)資料
型號(hào)： AT43USB326-AC
廠商： ATMEL CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： Multimedia USB Keyboard Controller with Embedded Hub
中文描述： 8-BIT, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.40 MM THICKNESS, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁(yè)數(shù)： 64/102頁(yè)
文件大小： 511K
代理商： AT43USB326-AC
64
AT43USB326
3313D–USB–04/06
Hub Status Register
In the AT43USB326 overcurrent detection and port power switch control output processing is
done in firmware. The hardware is designed so that various types of hubs are possible just
through firmware modifications.
1.
Hub local power status, bits 0 and 2, are optional features and apply to hubs that report
on a global basis. If this feature is not used, both these bits should be programmed to
0. To use this feature, the firmware needs to know the status of the local power supply,
which requires an input pin and extra internal or external circuitry.
2.
Hub overcurrent status, bits 1 and 3, apply to self powered hubs with bus powered SIE
only, or hubs that are programmable as self/bus powered. The firmware should clear
these two bits to 0.
The firmware uses bits 1 and 3 to generate bit 0 of the Hub and Port Status Change Bitmap
which is transmitted through the Hub Endpoint1 Data Register. Bit 0 of this register is a 1
whenever bit 1 or 3 of HSTATR is a 1.
Hub Status Register – HSTR
Bit 7..4 – Reserved
These bits are reserved in the AT43USB326 and will read as zero.
Bit 3 – OVLSC: Overcurrent Status Change
0 = No change has occurred on Overcurrent Indicator
1 = Overcurrent Indicator has changed
Bit 2 – LPSC: Hub Local Power Status Change
0 = No change has occurred on Local Power Status
1 = Local Power Status has changed
Bit 1 – OVI: Overcurrent Indicator
0 = All power operations normal
1 = An overcurrent exist on a hub wide basis
Bit 0 – LPS: Hub Local Power Status
0 = Local power supply is good
1 = Local power supply is lost (inactive)
Bit
7
6
5
4
3
2
1
0
$1FC7
–
–
–
–
OVLSC
LPSC
OVI
LPS
HSTR
Read/Write
R
R
R
R
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
相關(guān)PDF資料
PDF描述
AT43USB326-AU Multimedia USB Keyboard Controller with Embedded Hub
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB326-AU 功能描述:USB 接口集成電路 USB KEYBOARD FOR LOGITECH - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB351M 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB351M_04 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed/ Low-speed USB Microcontroller with ADC and PWM
AT43USB351M-AC 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed/ Low-speed USB Microcontroller with ADC and PWM
AT43USB353M 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
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