Philips Semiconductors

Product specification

PDIUSBH11A

Universal Serial Bus Hub

1999 Jul 22

6

PIN DESCRIPTION

The PDIUSBH11A 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 PDIUSBH11A 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

INPUT XTAL FREQUENCY

(MHz)

OUTPUT CLOCK FREQUENCY

(AT RESET)

00

MODE 0

(GoodLink

™)

48

12MHz

01

MODE 0

(GoodLink

™)

12

4 MHz

10

MODE 1

(Individual Overcurrent)

12

4 MHz

11

MODE 1

(Individual Overcurrent)

48

12 MHz

NOTE:

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

Pin configuration

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

TEST1

TEST2

TEST3

RESET_N

GND

XTAL1

XTAL2

OCURRENT_N / OCURRENT2_N *

SWITCH_N

SUSPEND

DN2_GL_N

DN3_GL_N / OCURRENT3_N *

DN4_GL_N / OCURRENT4_N *

CLKOUT

DN5_GL_N / OCURRENT5_N *

INT_N

SDA

SCL

GND

DN5_DP

DN5_DM

DN4_DP

DN4_DM

DN3_DP

DN3_DM

DN2_DP

DN2_DM

AGND

UP_DP

UP_DM

DUAL

IN-LINE

PACKAGE

SV01047

NOTE:

Pins 10, 14, 15, and 16 show alternative pin functions, depending on mode of operation (Mode 0 or Mode 1) as described in

Pin Description.