參數(shù)資料
型號(hào)： ISP1301
廠(chǎng)商： NXP Semiconductors N.V.
英文描述： Universal Serial Bus On-The-Go transceiver
中文描述： 通用串行總線(xiàn)在- The - Go的收發(fā)器
文件頁(yè)數(shù)： 7/46頁(yè)
文件大?。?/td> 245K
代理商： ISP1301
Philips Semiconductors
ISP1301
USB OTG transceiver
Product data
Rev. 01 — 14 April 2004
7 of 46
9397 750 11355
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.
Functional description
8.1 Serial controller
The serial controller includes the following functions:
I
2
C-bus slave interface
Interrupt generator
Mode Control registers
OTG registers
Interrupt related registers
Device identification registers.
The serial controller acts as an I
2
C-bus slave, and uses the SCL and SDA pins to
communicate with the OTG controller.
For more details on serial controller, see
Section 11
.
8.2 V
BUS
charge pump
The charge pump supplies current to the V
BUS
line. It can operate in any of the
following modes:
Output 5 V at current greater than 8 mA
Pull-up V
BUS
to 3.3 V through a resistor (R
VBUS(PU)
) for initiating V
BUS
pulsing SRP
Pull-down V
BUS
to ground through a resistor (R
VBUS(PD)
) for discharging V
BUS
before initiating SRP.
8.3 V
BUS
comparators
V
BUS
comparators provide indications regarding the voltage level on V
BUS
.
8.3.1
V
BUS
valid comparator
This comparator is used by an A-device to determine whether or not the voltage on
V
BUS
is at a valid level for operation. The minimum threshold for the V
BUS
valid
comparator is 4.4 V. Any voltage on V
BUS
below this threshold is considered to be a
fault. During power up, it is expected that the comparator output will be ignored.
8.3.2
Session valid comparator
The session valid comparator is a TTL-level input that determines when V
BUS
is high
enough for a session to start. Both the A-device and the B-device use this comparator
to detect when a session is being started. The A-device also uses this comparator to
indicate when a session is completed. The session valid threshold of the ISP1301 is
between 0.8 V and 2.0 V.
8.3.3
Session end comparator
The session end comparator determines when V
BUS
is below the B-device session
end threshold of 0.2 V to 0.8 V.
相關(guān)PDF資料
PDF描述
ISP1301BS Universal Serial Bus On-The-Go transceiver
ISP1362 Single-chip Universal Serial Bus On-The-Go controller
ISP1362BD Single-chip Universal Serial Bus On-The-Go controller
ISP1362EE Single-chip Universal Serial Bus On-The-Go controller
ISP1501 Hi-Speed Universal Serial Bus peripheral transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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ISP1301BS,157 功能描述:射頻收發(fā)器 DO NOT USE ORDER -G OR -S PART RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類(lèi)型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類(lèi)型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
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