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ISP1521 の電気的特性と機能

ISP1521のメーカーはNXP Semiconductorsです、この部品の機能は「Hi-Speed Universal Serial Bus hub controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISP1521
部品説明 Hi-Speed Universal Serial Bus hub controller
メーカ NXP Semiconductors
ロゴ NXP Semiconductors ロゴ 




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ISP1521 Datasheet, ISP1521 PDF,ピン配置, 機能
ISP1521
Hi-Speed Universal Serial Bus hub controller
Rev. 03 — 24 November 2004
Product data
1. General description
The ISP1521 is a stand-alone Universal Serial Bus (USB) hub controller IC that
complies with Universal Serial Bus Specification Rev. 2.0. It supports data transfer at
high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s).
The upstream facing port can be connected to a Hi-Speed USB host or hub or to an
Original USB host or hub. If the upstream facing port is connected to a Hi-Speed USB
host or hub, then the ISP1521 will operate as a Hi-Speed USB hub. That is, it will
support high-speed, full-speed and low-speed devices connected to its downstream
facing ports. If the upstream facing port is connected to an Original USB host or hub,
then the ISP1521 will operate as an Original USB hub. That is, high-speed devices
that are connected to its downstream facing ports will operate in full-speed mode
instead.
The ISP1521 is a full hardware USB hub controller. All Original USB devices
connected to the downstream facing ports are handled using a single Transaction
Translator (TT), when operating in a cross-version environment. This allows the
whole 480 Mbit/s upstream bandwidth to be shared by all the Original USB devices
on its downstream facing ports.
The ISP1521 has seven downstream facing ports. If not used, ports 3 to 7 can be
disabled. The vendor ID, product ID and string descriptors on the hub are supplied by
the internal ROM; they can also be supplied by an external I2C-bus™ EEPROM or a
microcontroller.
The ISP1521 is suitable for self-powered hub designs.
An analog overcurrent detection circuitry is built into the ISP1521, which can also
accept digital overcurrent signals from external circuits; for example, Micrel MOSFET
switch MIC2026. The circuitry can be configured to trip on a global or an individual
overcurrent condition.
Each port comes with two status indicator LEDs.
Target applications of the ISP1521 are monitor hubs, docking stations for notebooks,
internal USB hub for motherboards, hub for extending Intel® Easy PCs, hub boxes,
and so on.

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ISP1521 pdf, ピン配列
Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
4. Abbreviations
ACPI — Advanced Configuration and Power Interface
EMI — ElectroMagnetic Interference
ESD — ElectroStatic Discharge
NAK — Not AcKnowledge
PID — Packet IDentifier
PLL — phase-Locked Loop
SIE — Serial Interface Engine
TT — Transaction Translator
USB — Universal Serial Bus.
5. Ordering information
Table 1: Ordering information
Type number Package
Name Description
Version
ISP1521BE
LQFP80 plastic low profile quad flat package; 80 leads; body SOT315-1
12 × 12 × 1.4 mm
9397 750 13702
Product data
Rev. 03 — 24 November 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
3 of 53


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ISP1521 電子部品, 半導体
Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
9397 750 13702
Product data
Table 2: Pin description[1]…continued
Symbol[2]
Pin Type Description
DP0 4 AI/O upstream facing port 0 D+ connection (analog)
RPU
5 AI pull-up resistor connection; connect this pin through a resistor of
1.5 kΩ ± 5 % to 3.3 V
GND
6-
ground supply
RREF
7 AI reference resistor connection; connect this pin through a resistor
of 12 kΩ ± 1 % to an analog band gap ground reference
GND
8-
ground supply
DM5
DP5
9 AI/O downstream facing port 5 Dconnection (analog)[3]
10 AI/O downstream facing port 5 D+ connection (analog)[3]
VCC1
GND
11 -
12 -
analog supply voltage 1 (3.3 V)
ground supply
VCC4
GND
13 -
14 -
crystal and PLL supply voltage 4 (3.3 V)
ground supply
DM6
DP6
15 AI/O downstream facing port 6 Dconnection (analog)[3]
16 AI/O downstream facing port 6 D+ connection (analog)[3]
VCC2
GND
17 -
18 -
transceiver supply voltage 2 (3.3 V)
ground supply
DM1
DP1
19 AI/O downstream facing port 1 Dconnection (analog)[4]
20 AI/O downstream facing port 1 D+ connection (analog)[4]
TEST_LOW 21 -
connect to GND
TEST_HIGH 22 -
connect to 5.0 V through a 10 kresistor
OC1_N
23 AI/I overcurrent sense input for downstream facing port 1
(analog/digital)
PSW1_N
24 I/O output — power switch control output (open-drain) with an
internal pull-up resistor for downstream facing port 1
input — function of the pin when used as an input is given in
Table 5
OC6_N
25 AI/I overcurrent sense input for downstream facing port 6
(analog/digital)
PSW6_N
26 I/O output — power switch control output (open-drain) with an
internal pull-up resistor for downstream facing port 6
input — function of the pin when used as an input is given in
Table 5
OC5_N
27 AI/I overcurrent sense input for downstream facing port 5
(analog/digital)
PSW5_N
28 I/O output — power switch control output (open-drain) with an
internal pull-up resistor for downstream facing port 5
input — function of the pin when used as an input is given in
Table 5
GND
29 -
ground supply
VCC3
VREF(5V0)
30 -
31 -
digital supply voltage 3 (3.3 V)
reference voltage (5 V ± 5 %); used to power internal pull-up
resistors of PSWn_N pins and also for the analog overcurrent
detection
Rev. 03 — 24 November 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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共有リンク

Link :


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