ISP1161A1BMGA STEricsson, ISP1161A1BMGA Datasheet - Page 41

• Manufacturer Part Number: ISP1161A1BMGA
• Manufacturer: STEricsson

Specifications of ISP1161A1BMGA

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

ISP1161A1_5
Product data sheet
Fig 36. Using an external OC detection circuit.
‘n’ represents the downstream port number (n = 1 or 2)
V BUS
9.8.2 Using an external OC detection circuit
9.9.1 HC suspended state
9.9 Suspend and wake-up
downstream
connector
USB
port
When V
OC detection circuit cannot be used. An external OC detection circuit must be used
instead. Regardless of the V
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 detect
V o
external
OC
EN
V i
CC
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 internal
47 pF
(2×)
+ 5 V
22 Ω
22 Ω
+ 3.3 V or + 5 V
Figure 23
V CC
H_PSWn
Rev. 05 — 29 September 2009
H_OCn
H_DMn
H_DPn
CC
for the HC’s flow of USB state changes.
value, an external OC detection circuit can always be
OC detect
regulator
≥
15 kΩ
(2×)
bit 12
USB single-chip host and device controller
Configuration
HcHardware
ATX
OC select
1
0 Reg
PSW
C/L
HC CORE
ISP1161A1
SIE
Configuration
HcHardware
ISP1161A1
bit 10
© ST-ERICSSON 2009. All rights reserved.
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