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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)： | 45/68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
45 of 68
9397 750 06895
Philips Electronics N.V. 2000. All rights reserved.
The keyboard scanning algorithm is as follows:
1. When no key press is detected within a predefined time interval, the
microcontroller switches the MYn scan lines to ‘input’ and enters Idle mode.
2. Pressing any key will result in the HIGH level of an MXn line to be transferred to
an MYn input. Such a HIGH level (4.45 V typ.) exceeds V
IH
and generates an
interrupt, since all MYn lines are OR-ed together.
3. Upon a keyboard interrupt the microcontroller exits Idle mode and resumes
standard keyboard matrix scanning to determine which key was pressed.
This algorithm helps to reduce EMI and power consumption.
10.11 Suspend and resume
10.11.1
Suspend
When there is no activity on the USB bus for more than 3 ms, the device generates
an interrupt to the microcontroller to enter ‘suspend’ state.
The microcontroller can respond to a ‘suspend’ interrupt in three ways, depending on
the value of bit SuspendClock in the USBCON register when servicing the interrupt:
Fig 7.
Typical keyboard matrix implementation.
width
MGS801
82 k
8.2 k
8.2 k
MXn
MYn
ISP1130
Keyboard matrix
MY0
MY1
MY2
MY3
MY4
MY5
MY6
MY7
MY8
MY9
MY10
MY11
MY12
MY13
MY14
MY15
MY16
MY17
internal circuit
DisableKBDMatrix
(USBCON register)
VCC
VCC
internal circuit
MX0
MX1
MX2
MX3
MX4
MX5
MX6
MX7
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(fēng)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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