ISP1521BEUM ST-Ericsson Inc, ISP1521BEUM Datasheet - Page 43

• Manufacturer Part Number: ISP1521BEUM
• Description: IC USB HUB CONTROLLER HS 80-LQFP
• Manufacturer: ST-Ericsson Inc

Specifications of ISP1521BEUM

• Controller Type: USB Hub
• Interface: I²C
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Other names: 568-1884-2; ISP1521BE,518; ISP1521BE-T

16. Application information
CD00222695
Product data sheet
Fig 17. Descriptors configuration selection application diagram
facing port GoodLink
upstream
amber LEDs,
green and
The I
(1) The function on port 7, which is a nonremovable port, is optional.
port 1
2
C-bus cannot be shared between the EEPROM and the external microcontroller; see
16.1 Descriptor configuration selection
16.2 Overcurrent detection limit adjustment
7 USB downstream facing ports
For an overcurrent limit of 500 mA per port, a PMOS with R
is required. If a PMOS with a lower R
adjusted by using a series resistor; see
ΔV
Fig 18. Adjusting analog overcurrent detection limit (optional)
ΔV
I
OC(nom)
PMOS
ISP1521
PMOS
(1) R
. .
= ΔV
= 0.6 μA.
= voltage drop on PMOS
adj(oc)
trip
is optional.
= ΔV
amber LEDs,
green and
port 7
trip(intrinsic)
Rev. 07 — 4 February 2010
(1)
ROM
5 V
− (I
V
REF(5V0)
OC(nom)
DSon
Figure
ISP1521
acting as I
external microcontroller
× R
is used, analog overcurrent detection can be
USB function
adj(oc)
18.
2
PSWn_N
C-bus master
), where:
I
2
C-bus
004aaa260
OCn_N
R adj(oc) (1)
I
OC
Hi-Speed USB hub controller
DSon
Table
of approximately 100 mΩ
11.
© ST-ERICSSON 2010. All rights reserved.
EEPROM
ISP1521
004aaa302
43 of 53