PDIUSBH12D データシートの表示（PDF） - Philips Electronics

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PDIUSBH12D

USB 2-port hub

Philips Electronics 

Philips Semiconductors

USB 2-port hub

Product specification

PDIUSBH12

PINNING

The PDIUSBH12 has two modes of operation. The first mode (Mode 0) configures the pins DNx_GL_N for GoodLink™ LED indication. The

second mode (Mode 1) configures the LED pins as per port overcurrent condition pins. An overcurrent condition on any port can be uniquely

identified in Mode 1. However, all downstream ports are disabled as a result of a single overcurrent condition. In addition to the two modes of

operation, the PDIUSBH12 can also be configured to take either a 48 MHz crystal oscillator (for backward compatibility to PDIUSBH11) or a 12

MHz crystal.

The internal 4X clock multiplier PLL will be activated when 12 MHz input XTAL mode is selected. Also, the output clock frequency is now

programmable rather than fixed to 12 MHz. The output clock frequency can be programmed through the Set Mode command. All these new

features are added while maintaining backward compatibility to the PDIUSBH11 through TEST2 and TEST1 pins.

TEST2 TEST1

MODE

00

MODE 0

(GoodLink™)

01

MODE 0

(GoodLink™)

10

MODE 1

(Individual Overcurrent)

11

MODE 1

(Individual Overcurrent)

NOTE:

1. Pin TEST3 should always be connected to Ground at all times.

INPUT XTAL FREQUENCY

(MHz)

48

OUTPUT CLOCK FREQUENCY

(AT REST)

12MHz

12

4 MHz

12

4 MHz

48

12 MHz

Pin configuration

TEST1 1

TEST2 2

TEST3 3

RESET_N 4

GND 5

XTAL1 6

XTAL2 7

CLKOUT 8

VCC 9

OCURRENT_N / 10

OCURRENT2_N

SWITCH_N 11

SUSPEND 12

DN2_GL_N 13

DN3_GL_N / 14

OCURRENT3_N

28 UP_DM

27 UP_DP

26 AVCC

25 AGND

24 DN2_DM

23 DN2_DP

22 DN3_DM

21 DN3_DP

20 GND

19 SCL

18 SDA

17 INT_N

16 RSVD

15 RSVD

SV01751

NOTE:

Pin 10 and Pin 14 show alternative pin functions, depending on

mode of operation (Mode 0 or Mode 1) as described in

Pin Description.

1999 Jul 22

6

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