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參數資料
| 型號： | ISP1160 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Embedded Universal Serial Bus Host Controller |
| 中文描述： | 嵌入式通用串行總線主控制器 |
| 文件頁數： | 48/88頁 |
| 文件大小： | 2044K |
| 代理商： | ISP1160 |
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Philips Semiconductors
ISP1160
Embedded USB Host Controller
Product data
Rev. 04 — 04 July 2003
48 of 88
9397 750 11371
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
10.3 HC Root Hub registers
All registers included in this partition are dedicated to the USB Root Hub, which is an
integral part of the HC although it is functionally a separate entity. The Host Controller
Driver (HCD) emulates USBD accesses to the Root Hub via a register interface. The
HCD maintains many USB-defined hub features that are not required to be supported
in hardware. For example, the Hub’s Device, Configuration, Interface, and Endpoint
Descriptors, as well as some static fields of the Class Descriptor, are maintained only
in the HCD. The HCD also maintains and decodes the Root Hub’s device address as
well as other minor operations more suited for software than hardware.
The Root Hub registers were developed to match the bit organization and operation
of typical hubs found in the system.
Four 32-bit registers have been defined:
HcRhDescriptorA
HcRhDescriptorB
HcRhStatus
HcRhPortStatus[1:NDP]
Each register is read and written as a DWORD. These registers are only written
during initialization to correspond with the system implementation. The
HcRhDescriptorA and HcRhDescriptorB registers are writeable regardless of the
HC’s USB states. HcRhStatus and HcRhPortStatus are writeable during the
USBOperational state only.
10.3.1
HcRhDescriptorA register (R/W: 12H/92H)
The HcRhDescriptorA register is the first register of two describing the characteristics
of the Root Hub. Reset values are implementation-specific (IS). The descriptor length
(11), descriptor type and hub controller current (0) fields of the hub Class Descriptor
are emulated by the HCD. All other fields are located in registers HcRhDescriptorA
and HcRhDescriptorB.
Remark:
IS denotes an implementation-specific reset value for that field.
Code (Hex): 12 —
read
Code (Hex): 92 —
write
Table 27:
Bit
31 to 11
10 to 0
HcLSThreshold register: bit description
Symbol
Description
reserved
LST[10:0]
LSThreshold:
Contains a value that is compared to the
FrameRemaining field before a low-speed transaction is initiated.
The transaction is started only if FrameRemaining
≥
this field. The
value is calculated by the HCD, which considers transmission and
set-up overhead.
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1160BD | Embedded Universal Serial Bus Host Controller |
| ISP1160BM | Embedded Universal Serial Bus Host Controller |
| ISP1161A | Full-speed Universal Serial Bus single-chip host and device controller |
| ISP1161ABD | Full-speed Universal Serial Bus single-chip host and device controller |
| ISP1161ABM | Full-speed Universal Serial Bus single-chip host and device controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1160BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller |
| ISP1160BD,157 | 功能描述:USB 接口集成電路 USB 1.1 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1160BD/01 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller |
| ISP1160BD/01,118 | 功能描述:USB 接口集成電路 USB HOST CTRL RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1160BD/01,151 | 功能描述:USB 接口集成電路 USB FULL SPEED HOST RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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