isp1521 NXP Semiconductors, isp1521 Datasheet - Page 44

• Manufacturer Part Number: isp1521
• Description: Hi-speed Universal Serial Bus Hub Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
ISP1521_4
Product data sheet
16.3 Self-powered hub configurations
Fig 19. Self-powered hub; individual port power switching; individual overcurrent
3.3 V or
TEST_HIGH
5.0 V
TEST_LOW
V
REF(5V0)
detection
ADOC
GND
POWER SUPPLY
REGULATOR
3.3 V LDO
5 V
VOLTAGE
ISP1521
3
Rev. 04 — 30 March 2006
V
CC
+
PSW5_N
OC5_N
PSW6_N
PSW1_N
PSW4_N
PSW7_N
OC7_N
OC1_N
PSW2_N
OC2_N
PSW3_N
OC4_N
OC6_N
OC3_N
+4.85 V (min)
47 k
47 k
0.1 F
0.1 F
T1
T7
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
120 F
120 F
ferrite bead
ferrite bead
+4.75 V
+4.75 V
ISP1521
(min)
(min)
port connector
downstream
V
D+
D
GND
SHIELD
V
D+
D
GND
SHIELD
004aaa304
port 2
port 6
BUS
BUS
to
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