ISP1161A1BMUM STEricsson, ISP1161A1BMUM Datasheet - Page 42

• Manufacturer Part Number: ISP1161A1BMUM
• Manufacturer: STEricsson

Specifications of ISP1161A1BMUM

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
9397 750 13961
Product data
Fig 36. Using an external OC detection circuit.
‘n’ represents the downstream port number (n = 1 or 2)
V BUS
downstream
connector
9.8.2 Using an external OC detection circuit
9.9.1 HC suspended state
USB
port
9.9 Suspend and wake-up
OC detect
V o
external
When V
internal OC detection circuit cannot be used. An external OC detection circuit must be
used instead. Regardless of the V
always be used. To use an external OC detection circuit, AnalogOCEnable, bit 10 of
the HcHardwareConfiguration register, should be logic 0. By default after reset, this
bit is already logic 0; therefore, the HCD does not need to clear this bit.
Figure 36
The HC can be put into suspended state by setting the HcControl register (01H to
read, 81H to write). See
OC
EN
V i
47 pF
(2 )
CC
5 V
shows how to use an external OC detection circuit.
(pin 56) is connected to a 3.3 V instead of the 5 V power supply, the
22
22
3.3 V or 5 V
V CC
H_PSWn
Rev. 03 — 23 December 2004
H_OCn
H_DMn
H_DPn
Figure 23
OC detect
regulator
CC
for the HC’s flow of USB state changes.
15 k
(2 )
value, an external OC detection circuit can
bit 12
USB single-chip host and device controller
Configuration
HcHardware
ATX
OC select
1
0 Reg
PSW
C/L
HC CORE
ISP1161A1
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
SIE
Configuration
HcHardware
ISP1161A1
bit 10
004aaa183
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