isp1521 NXP Semiconductors, isp1521 Datasheet - Page 45

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

Philips Semiconductors
ISP1521_4
Product data sheet
Fig 20. Self-powered hub; ganged port power switching; global overcurrent detection
3.3 V or
5.0 V
TEST_HIGH
TEST_LOW
V
REF(5V0)
ADOC
GND
POWER SUPPLY
REGULATOR
5.1 V
3.3 V LDO
(kick-up)
VOLTAGE
ISP1521
Rev. 04 — 30 March 2006
3 %
V
CC
+
+4.95 V (min)
PSW2_N
PSW3_N
PSW4_N
PSW5_N
PSW6_N
PSW7_N
OC2_N
OC3_N
OC4_N
OC5_N
OC6_N
OC7_N
OC1_N
PSW1_N
47 k
+5 V
0.1 F
low-ohmic
sense resistor
for overcurrent
detection
T1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
120 F
120 F
ferrite bead
ferrite bead
ISP1521
+4.75 V
+4.75 V
(min)
(min)
port connector
downstream
004aaa306
V
D+
D
GND
SHIELD
V
D+
D
GND
SHIELD
port 2
port 6
BUS
BUS
to
45 of 55
1
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