參數資料
型號： ISP1161A
廠商： NXP Semiconductors N.V.
英文描述： Full-speed Universal Serial Bus single-chip host and device controller
中文描述： 全速通用串行總線的單芯片主機和設備控制器
文件頁數： 40/134頁
文件大?。?/td> 587K
代理商： ISP1161A
Philips Semiconductors
ISP1161A
Full-speed USB single-chip host and device controller
Product data
Rev. 03 — 23 December 2004
40 of 134
9397 750 13962
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
9.8.1
Using an internal OC detection circuit
The internal OC detection circuit can be used only when V
CC
(pin 56) is connected to
a 5 V power supply. The HCD must set AnalogOCEnable, bit 10 of the
HcHardwareConfiguration register, to logic 1.
An application using the internal OC detection circuit and internal 15 k
pull-down
resistors is shown in
Figure 35
. In this example, the HCD must set both
AnalogOCEnable and DownstreamPort15KresistorSel to logic 1. They are bit 10 and
bit 12 of the HcHardwareConfiguration register, respectively.
When H_OCn detects an overcurrent status on a downstream port, H_PSWn will
output HIGH, logic 1 to turn off the 5 V power supply to the downstream port V
BUS
.
When there is no such condition, H_PSWn will output LOW, logic 0 to turn on the 5 V
power supply to the downstream port V
BUS
.
In general applications, a P-channel MOSFET can be used as the power switch for
V
BUS
. Connect the 5 V power supply to the source of the P-channel MOSFET, V
BUS
to
the drain, and H_PSWn to the gate. Call the voltage drop across the drain and source
the overcurrent detection voltage (V
OC
). For the internal overcurrent detection circuit,
a voltage comparator has been incorporated with a nominal voltage threshold (
V
trip
)
of 75 mV. When V
OC
exceeds V
trip
, H_PSWn will output a HIGH level, logic 1 to turn
off the P-channel MOSFET. If the P-channel MOSFET has a R
DSon
of 150 m
, the
overcurrent threshold will be 500 mA. The selection of a P-channel MOSFET with a
different R
DSon
will result in a different overcurrent threshold.
‘n’ represents the downstream port number (n = 1 or 2)
Fig 35. Using internal OC detection circuit.
004aaa090
ATX
1
≥
0
Reg
PSW
OC select
OC detect
regulator
VCC
H_OCn
V =
+
5 V
VBUS
H_PSWn
H_DMn
H_DPn
HC CORE
C/L
SIE
USB
downstream
port
connector
15 k
(2
×
)
47 pF
(2
×
)
22
22
ISP1161A
VBUS
+
5 V
P-Ch
MOSFET
bit 10
bit 12
HcHardware
Configuration
HcHardware
Configuration
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ISP1161ABD Full-speed Universal Serial Bus single-chip host and device controller
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ISP1161A1BD Universal Serial Bus single-chip host and device controller
相關代理商/技術參數
參數描述
ISP1161A1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus single-chip host and device controller
ISP1161A1BD 功能描述:IC USB HOST/DEVICE CTRLR 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應商設備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A
ISP1161A1BD,118 功能描述:USB 接口集成電路 USB1.1 HOST &DEVICE 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
ISP1161A1BD,151 功能描述:USB 接口集成電路 USB1.1 HOST &DEVICE 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
ISP1161A1BD,157 功能描述:USB 接口集成電路 DO NOT USE ORDER -S OR -T PART 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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