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USB2534I-1080AEN

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P52
USB 2.0 Hi-Speed 4-Port Hub Controller
Datasheet
DS00001713A-page 40
2014 Microchip Technology Inc.
function as expected per the USB 2.0 Specification with respect to a resume event. It will permit the
host to take over resume signaling.
For the case where the host is not able to drive a ‘K’ within the 14 ms time frame, the hub will stop
sending a ‘K’ on the upstream and downstream ports. It must follow through as a controlling hub and
properly terminate the resume with either an EOP or with HS terminations as is currently implemented
in the selective resume case, per the USB specification.
8.6 High Speed Indicator (HS_IND)
The HS_IND pin can be used to drive an LED. The active state of the LED will be determined as
follows:
If CFG_SEL1 = ‘0’, HS_IND is active high.
If CFG_SEL1 = ‘1’, then HS_IND is active low.
Assertion of HS_IND indicates the device is connected at high speed. Negation of HS_IND indicates
the device is connected at full speed.
Note: This pin shares functionality with the CFG_SEL1 configuration strap. The logic state of this pin
is internally latched on the rising edge of RESET_N (RESET_N negation), and is used to
determine the hub configuration method. Refer to Section 6.3.2, "Configuration Select
(CFG_SEL[1:0])," on page 30 for additional information.
USB 2.0 Hi-Speed 4-Port Hub Controller
Datasheet
2014 Microchip Technology Inc. DS00001713A-page 41
Chapter 9 Operational Characteristics
9.1 Absolute Maximum Ratings*
+3.3 V Supply Voltage (VDD33, VDDA33) (Note 9.1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to +3.6 V
Positive voltage on input signal pins, with respect to ground (Note 9.2) . . . . . . . . . . . . . . . . . . . . 3.6 V
Negative voltage on input signal pins, with respect to ground . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V
Positive voltage on XTAL1/REFCLK, with respect to ground . . . . . . . . . . . . . . . . . . . . . . . . .VDDCR12
Positive voltage on USB DP/DM signals, with respect to ground (Note 9.3) . . . . . . . . . . . . . . . . . 5.5 V
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55
o
C to +150
o
C
Lead Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Refer to JEDEC Spec. J-STD-020
HBM ESD Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..JEDEC Class 3A
Note 9.1 When powering this device from laboratory or system power supplies, it is important that
the absolute maximum ratings not be exceeded or device failure can result. Some power
supplies exhibit voltage spikes on their outputs when AC power is switched on or off. In
addition, voltage transients on the AC power line may appear on the DC output. If this
possibility exists, it is suggested to use a clamp circuit.
Note 9.2 This rating does not apply to the following signals: All USB DM/DP pins, XTAL1/REFCLK,
XTAL2.
Note 9.3 This rating applies only when VDD33 is powered.
*Stresses exceeding those listed in this section could cause permanent damage to the device. This is
a stress rating only. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability. Functional operation of the device at any condition exceeding those indicated in
Section 9.2, "Operating Conditions**", Section 9.4, "DC Specifications", or any other applicable section
of this specification is not implied. Note, device signals are NOT 5 volt tolerant unless specified
otherwise.
USB 2.0 Hi-Speed 4-Port Hub Controller
Datasheet
DS00001713A-page 42
2014 Microchip Technology Inc.
9.2 Operating Conditions**
+3.3 V Supply Voltage (VDD33, VDDA33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+3.0 V to 3.6 V
Power Supply Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.4
Ambient Operating Temperature in Still Air (T
A
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.5
Note 9.4 The power supply rise time requirements vary dependent on the usage of the external
reset (RESET_N). If RESET_N is asserted at power-on, the power supply rise time must
be 10mS or less (t
RT(max)
= 10mS). If RESET_N is not used at power-on (tied high), the
power supply rise time must be 1mS or less (t
RT(max)
= 1mS). Figure 9.1 illustrates the
supply rise time requirements.
Note 9.5 0
o
C to +70
o
C for commercial version, -40
o
C to +85
o
C for industrial version.
**Proper operation of the device is guaranteed only within the ranges specified in this section.
Figure 9.1 Supply Rise Time Model
t
10%
10%
90%
Voltage
t
RT
t
90%
Time
100%
3.3V
VSS
VDDA33
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P52

USB2534I-1080AEN

Mfr. #:
Buy USB2534I-1080AEN
Manufacturer:
Microchip Technology
Description:
USB Interface IC 4-pt USB2.0 Hub Cntl Industrial Temp
Lifecycle:
New from this manufacturer.
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