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參數(shù)資料
| 型號(hào)： | CY7C65640-LFXC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 總線控制器 |
| 英文描述： | TetraHub High-speed USB Hub Controller |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, QCC56 |
| 封裝： | 8 X 8 MM, LEAD FREE, QFN-56 |
| 文件頁數(shù)： | 9/27頁 |
| 文件大小： | 675K |
| 代理商： | CY7C65640-LFXC |
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CY7C65640
Document #: 38-08019 Rev. *E
Page 9 of 27
4.8
The USB 2.0 port indicators are also supported directly by TetraHub. As per the specification, each downstream port of the hub
supports an optional status indicator. The presence of indicators for downstream facing ports is specified by bit 7 of the
wHubCharacteristics field of the hub class descriptor. The default TeraHub descriptor specifies that port indicators are supported
(wHubCharacteristics, bit 7 is set). If port indicators are not included in the hub, this should be disabled by the EEPROM.
Each port indicator is strategically located directly on the opposite edge of the port which it is associated with. The indicator
provides two colors: green and amber. This is implemented as two separate LEDs, one amber and the other green. A combination
of hardware and software control is used to inform the user of the current status of the port or the device attached to the port and
to guide the user through problem resolution. Colors and blinking are used to provide information to the user. The significance of
the color of the LED depend on the operational mode of the TetraHub. There are two modes of operation for the TetraHub port
indicators: automatic and manual.
On power-up the TeraHub defaults to Automatic Mode, where the color of the Port Indicator (Green, Amber, Off) indicates the
functional status of the TetraHub port. In Automatic Mode, TetraHub will turn on the green LED whenever the port is enabled and
the amber LED when it has had an overcurrent condition detected. The color of the port indicator is set by the port state machine.
Blinking of the LEDs is not supported in Automatic Mode.
Table 4-1
below identifies the mapping of color to port state in Automatic
Mode.
Port Indicators
In manual mode, the indicators are under the control of the host, which can turn on one of the LEDs, or leave them off. This is
done by a system software USB Hub class request. Blinking of the LEDs is supported in Manual Mode. The port indicators allow
the user to intervene on any error detection. For example, when babble is detected on plugging in a defective device, or on
occurrence of an overcurrent condition, the port indicators corresponding to the downstream port will blink green or only light the
amber LED, respectively.
Table 4-2
below displays the color definition of the indicators when TetraHub is in Manual Mode.
Note
: Information presented in
Table 4-1
and
Table 4-2
is from USB 2.0 specification Tables 11-6 and 11-7, respectively.
Table 4-1. Automatic Port State to Port Indicator Color Mapping
Port
Switching
With
Downstream Facing Hub Port State
Disconnected, Disabled, Not
Configured, Resetting, Testing
Off
Powered Off
Off or Amber if due to an
Overcurrent Condition
Off
Enabled, Transmit,
or TransmitR
Green
Suspended, Resuming,
SendEOR, Restart_E /S
Off
Without
Off or Amber if due to an
Overcurrent Condition
Green
Off
Table 4-2. Port Indicator Color Definitions in Manual Mode
Color Definition
Port State
Off
Amber
Green
Blinking Off/Green
Blinking Off/Amber
Blinking Green/Amber
Not operational
Error condition
Fully Operational
Software Attention
Hardware Attention
Reserved
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY7C65640 | TetraHub High-speed USB Hub Controller |
| CY7C65640-LFC | TetraHub High-speed USB Hub Controller |
| CY4602 | TetraHub High-speed USB Hub Controller |
| CY7C65640A | TetraHub High-Speed USB Hub Controller(TetraHub高速USB Hub控制器) |
| CY7C67200 | EZ-OTG Programmable USB On-The-Go Host/Peripheral Controller(EZ-OTG可編程USB On-The-Go主機(jī)/外圍設(shè)備控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C65642-28LTXC | 功能描述:USB 接口集成電路 TetraHub Ctrl USB2.0 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型: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 |
| CY7C65642-28LTXCT | 制造商:Cypress Semiconductor 功能描述:USB HIGH SPEED HUBS - Tape and Reel 制造商:Cypress Semiconductor 功能描述:INTERFACE CONTROLLER |
| CY7C65642-48AXC | 功能描述:USB 接口集成電路 CY7C65642-48AXC RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型: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 |
| CY7C65642-48AXCT | 功能描述:USB 接口集成電路 CY7C65642-48AXCT RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型: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 |
| CY7C66013C-PVXC | 功能描述:8位微控制器 -MCU USB Hubs RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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