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參數(shù)資料
| 型號： | ISP1130DL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Universal Serial Bus compound hub with integrated keyboard controller |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDSO56 |
| 封裝： | PLASTIC, SSOP-56 |
| 文件頁數(shù)： | 8/68頁 |
| 文件大?。?/td> | 1786K |
| 代理商： | ISP1130DL |
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Philips Semiconductors
ISP1130
USB compound hub with keyboard controller
Objective specification
Rev. 01 — 23 March 2000
8 of 68
9397 750 06895
Philips Electronics N.V. 2000. All rights reserved.
6.1 80C51 microcontroller
An integrated 80C51 microcontroller serves as a keyboard controller. It has 8 kbytes
of mask ROM and 256 bytes of RAM. The I/O ports have been configured as an
8
×
18 line scan matrix. Three LED control outputs are available for keyboard status
indicators (Caps Lock, Num Lock and Scroll Lock). Interfacing to the USB hub is done
via 3 registers (command, data, status), which are accessible via the external data
memory address space (MOVX instruction).
The keyboard firmware resides in the ROM and enumerates the embedded function
as ‘HID compatible keyboard device’ during hub initialization.
The microcontroller runs on a 12 MHz clock, derived from the PLL oscillator. A
watchdog timer resets the microcontroller in case of a software hang-up.
6.2 Analog transceivers
The integrated transceivers interface directly to the USB cables through external
termination resistors. They are capable of transmitting and receiving serial data at
both ‘full-speed’ (12 Mbit/s) and ‘low-speed’ (1.5 Mbit/s) data rates. The slew rates
are adjusted according to the speed of the device connected and lie within the range
mentioned in the USB Specification Rev. 1.1
6.3 Philips Serial Interface Engine (SIE)
The Philips SIE implements the full USB protocol layer. It is completely hardwired for
speed and needs no firmware intervention. The functions of this block include:
synchronization pattern recognition, parallel/serial conversion, bit (de-)stuffing, CRC
checking/generation, Packet IDentifier (PID) verification/generation, address
recognition, handshake evaluation/generation.
6.4 Hub repeater
The hub repeater is responsible for managing connectivity on a ‘per packet’ basis. It
implements ‘packet signalling’ and ‘resume’ connectivity. Low-speed devices can be
connected to downstream ports. If a low-speed device is detected the repeater will
not propagate upstream packets to the corresponding port, unless they are preceded
by a PREAMBLE PID.
6.5 End-of-frame timers
This block contains the specified EOF1 and EOF2 timers which are used to detect
‘loss-of-activity’ and ‘babble’ error conditions in the hub repeater. The timers also
maintain the low-speed keep-alive strobe which is sent at the beginning of a frame.
6.6 General and individual port controller
The general and individual port controllers together provide status and control of
individual downstream ports. Any port status change will be reported to the host via
the hub status change (interrupt) endpoint.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISP1130N | Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1160 | Embedded Universal Serial Bus Host Controller |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISP1130N | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1160 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller |
| 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(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 |
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