ISP1520BDGA datasheet, PDF - EEWORLD Datasheet

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ISP1520

Hi-Speed Universal Serial Bus hub controller

Rev. 04 — 28 April 2006

Product data sheet

1. General description

The ISP1520 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 ISP1520 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 ISP1520

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 ISP1520 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 ISP1520 has four downstream facing ports. If not used, ports 3 and 4 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 I

2

C-bus EEPROM or a

microcontroller.

The ISP1520 is suitable for self-powered hub designs.

An analog overcurrent detection circuitry is built into the ISP1520, 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 ISP1520 are monitor hubs, docking stations for notebooks,

internal USB hub for motherboards, hub for extending Intel Easy PCs, hub boxes, and so

on.

Philips Semiconductors

ISP1520

Hi-Speed USB hub controller

2. Features

■

Complies with:

◆

Universal Serial Bus Speciﬁcation Rev. 2.0

◆

Advanced Conﬁguration and Power Interface (ACPI), OnNow and USB power

management requirements

■

Supports data transfer at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and

low-speed (1.5 Mbit/s)

■

Self-powered capability

■

Conﬁgurable number of ports

■

Internal Power-On Reset (POR) and low voltage reset circuit

■

Port status indicators

■

Integrates high performance USB interface device with hub handler, Philips Serial

Interface Engine (SIE) and transceivers

■

Built-in overcurrent detection circuit

■

Individual or ganged power switching, individual or global overcurrent protection, and

nonremovable port support by I/O pins conﬁguration

■

Simple I

2

C-bus (master or slave) interface to read device descriptor parameters,

language ID, manufacturer ID, product ID, serial number ID and string descriptors from

a dedicated external EEPROM, or to allow the microcontroller to set up hub

descriptors

■

Visual USB trafﬁc monitoring (GoodLink) for the upstream facing port

■

Uses 12 MHz crystal oscillator with on-chip Phase-Locked Loop (PLL) for low

ElectroMagnetic Interference (EMI)

■

Supports temperature range from

−40 °C

to +70

°C

■

Available in LQFP64 package

3. Applications

■

Monitor hubs

Docking stations for notebooks

Internal hub for USB motherboards

Hub for extending Easy PCs

Hub boxes

4. Ordering information

Table 1.

Ordering information

Package

Name

ISP1520BD

LQFP64

Description

plastic low proﬁle quad ﬂat package; 64 leads; body 10

×

10

×

1.4 mm

Version

SOT314-2

Type number

ISP1520_4

Product data sheet

Rev. 04 — 28 April 2006

2 of 53

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xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x

upstream port 0

12 MHz

ISP1520_4

RPU

XTAL1

5

PLL

RAM

ROM

I

2

C-bus

64

I

2

C-BUS

CONTROLLER

63

SDA

SCL

7

3

4

33

34

XTAL2

Product data sheet

RREF

DM0

DP0

PHILIPS PIE

ANALOG TRANSCEIVER

−

ORIGINAL USB

−

HI-SPEED USB

BIT CLOCK

RECOVERY

TRANSACTION

TRANSLATOR

31

PHILIPS SIE

HUB

CONTROLLER

62

RESET_N

HUBGL_N

MINI-HOST

CONTROLLER

HUB REPEATER

−

ORIGINAL USB

−

HI-SPEED USB

V

CC1

9, 39

V

CC2

13, 45

5. Block diagram

V

CC3

23, 57

Philips Semiconductors

V

CC4

11, 41

TEST_HIGH

8, 12,

18, 38

TEST_LOW

17

TEST

1

ISP1520

32

PORT

CONTROLLER

49

ADOC

NOOC

GND

ROUTING LOGIC

2, 6, 10,

14, 21,

22, 35,

40, 42,

46, 58,

59

24, 56

Rev. 04 — 28 April 2006

PORT 1

POWER

SWITCH

OVERCURRENT

DETECTION

LINK LEDS

PORTS 2 to 3

PORT 4

ANALOG

TRANSCEIVER

−

ORIGINAL USB

−

HI-SPEED USB

16

DP1

OC1_N

downstream

port 1

GRN1_N

downstream

port 2 to port 3

PSW1_N

AMB1_N

19

20

60

61

47

DM4

48

DP4

V

REF(5V0)

POWER

SWITCH

OVERCURRENT

DETECTION

LINK LEDS

ANALOG

TRANSCEIVER

−

ORIGINAL USB

−

HI-SPEED USB

15

25

26

PSW4_N

OC4_N

downstream

port 4

50

51

AMB4_N

GRN4_N

004aaa169

DM1

Fig 1. Block diagram

ISP1520

Hi-Speed USB hub controller

3 of 53

Philips Semiconductors

ISP1520

Hi-Speed USB hub controller

6. Pinning information

6.1 Pinning

62 HUBGL_N

56 V

REF(5V0)

54 GRN2_N

52 GRN3_N

50 GRN4_N

60 GRN1_N

55 AMB2_N

53 AMB3_N

51 AMB4_N

61 AMB1_N

TEST

GND

DM0

DP0

RPU

GND

RREF

TEST_HIGH

V

CC1

1

2

3

4

5

6

7

8

9

49 NOOC

57 V

CC3

58 GND

59 GND

64 SDA

63 SCL

48 DP4

47 DM4

46 GND

45 V

CC2

44 DP3

43 DM3

42 GND

41 V

CC4

40 GND

39 V

CC1

38 TEST_HIGH

37 DP2

36 DM2

35 GND

34 XTAL2

33 XTAL1

ISP1520BD

GND 10

V

CC4

11

TEST_HIGH 12

V

CC2

13

GND 14

DM1 15

DP1 16

TEST_LOW 17

TEST_HIGH 18

OC1_N 19

PSW1_N 20

GND 21

GND 22

V

CC3

23

V

REF(5V0)

24

OC4_N 25

PSW4_N 26

OC3_N 27

PSW3_N 28

OC2_N 29

PSW2_N 30

RESET_N 31

ADOC 32

004aaa164

Fig 2. Pin conﬁguration

6.2 Pin description

Table 2.

TEST

GND

DM0

DP0

RPU

GND

RREF

TEST_HIGH

V

CC1

ISP1520_4

Pin description

1

2

3

4

5

6

7

8

9

Type

-

AI/O

AI

-

AI

-

Description

connect to ground through a 100 kΩ resistor

ground supply

upstream facing port D− connection (analog)

upstream facing port D+ connection (analog)

pull-up resistor connection; connect this pin through a resistor of

1.5 kΩ

±

5 % to 3.3 V

ground supply

reference resistor connection; connect this pin through a

resistor of 12 kΩ

±

1 % to an analog band gap ground reference

test pin; connect to 3.3 V

supply voltage 1 (3.3 V) (analog)

Symbol

[1][2]

Product data sheet

Rev. 04 — 28 April 2006

4 of 53

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