ISP1705AETTM STEricsson, ISP1705AETTM Datasheet - Page 35

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ISP1705AETTM

Manufacturer Part Number
ISP1705AETTM
Description
Manufacturer
STEricsson
Datasheet

Specifications of ISP1705AETTM

Lead Free Status / RoHS Status
Compliant

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ISP1705_2
Product data sheet
10.3.3.1 Standard USB host controllers
10.3.3 Using and selecting the V
The A_VBUS_VLD indicator in the V
configured based on current draw requirements. A_VBUS_VLD can input from one or
more V
A description on how to use and select the V
The V
link whenever there is a change in the V
must first enable the corresponding interrupts in the USB_INTR_EN_R and
USB_INTR_EN_F registers.
The link can use the V
shows the recommended usage for typical applications.
Table 21.
For standard hosts, the system must be able to provide 500 mA on V
4.75 V to 5.25 V. An external circuit must be used to detect overcurrent conditions. If the
external overcurrent detector provides a digital fault signal, then the fault signal must be
connected to the ISP1705 FAULT input pin, and the link must do the following:
Application
Standard host
Standard peripheral
OTG A-device
OTG B-device
1. Set the IND_COMPL bit in the INTF_CTRL register (see
2. Set the USE_EXT_VBUS_IND bit in the OTG_CTRL register (see
Fig 13. RXCMD A_VBUS_VLD indicator source
USE_EXT_VBUS_IND,
logic 1, depending on the polarity of the external fault signal.
logic 1.
BUS
BUS
IND_PASSTHRU
IND_COMPL
state encoding is shown in
V
voltage indicators, as shown in
BUS
FAULT
V
indicators in RXCMD required for typical applications
BUS
A_VBUS_VLD comparator
A_VBUS_VLD
yes
no
yes
no
Rev. 02 — 21 January 2009
FAULT indicator
BUS
state to monitor V
BUS
internal A_VBUS_VLD
state encoding
BUS
Table
BUS
state provides several options and must be
SESS_VLD
no
yes
yes
yes
Figure
20. The ISP1705 will send an RXCMD to the
state. To receive V
BUS
BUS
complement
and take appropriate actions.
state encoding is given in
output
13.
ULPI Hi-Speed USB transceiver
Section
SESS_END
no
no
no
yes
BUS
state updates, the link
© ST-NXP Wireless 2009. All rights reserved.
004aaa698
(0, X)
(1, 0)
(1, 1)
BUS
11.6) to logic 0 or
Section
ISP1705
in the range of
Section
RXCMD
A_VBUS_VLD
Table 21
11.7) to
10.3.3.
34 of 89

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