isp1520 NXP Semiconductors, isp1520 Datasheet - Page 42

• Manufacturer Part Number: isp1520
• Description: Hi-speed Universal Serial Bus Hub Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
ISP1520_4
Product data sheet
Fig 19. Self-powered hub; individual port power switching; individual overcurrent detection
3.3 V or 5.0 V
16.3 Self-powered hub configurations
TEST_HIGH
TEST_LOW
V
REF(5V0)
ADOC
GND
POWER SUPPLY
REGULATOR
3.3 V LDO
5 V
VOLTAGE
ISP1520
3
V
CC
+
+4.85 V (min)
OC4_N
OC1_N
OC2_N
OC3_N
PSW4_N
PSW1_N
PSW2_N
PSW3_N
Rev. 04 — 28 April 2006
47 k
47 k
0.1 F
0.1 F
T1
T4
120 F
120 F
ferrite bead
ferrite bead
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
+4.75 V
+4.75 V
(min)
(min)
port connector
downstream
V
D+
D
GND
SHIELD
V
D+
D
GND
SHIELD
004aaa305
port 2
port 3
BUS
BUS
ISP1520
to
1
4
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