Philips Semiconductors

ISP1105/1106/1107

Advanced USB transceivers

Product data

Rev. 06 — 30 November 2001

8 of 24

9397 750 08872

© Koninklijke Philips Electronics N.V. 2001. All rights reserved.

low-power (suspended) state level. Both the VP and VM pins are driven HIGH to

indicate this mode. Pin RCV is made LOW. Some hysteresis is built into the detection

[1]

High impedance or driven LOW.

[2]

ISP1105 only.

[1]

High impedance or driven LOW.

7.4 Power supply input options

The ISP1105/1106/1107 range has two power supply input options:

3.3 V output reference.

internal regulator is bypassed and the internal circuitry is supplied directly from the

specification.

The supply voltage range for each input option is specified in Table 10.

Table 8:

Pin states in Disable or Sharing mode

Pins

Disable mode state

Sharing mode state

5 V input / 3.3 V output

3.3 V input / 3.3 V input

not present

not present

1.65 V to 3.6 V input

high impedance (off)

high impedance (off)

(D

+, D−)

high impedance

high impedance

(VP, VM)

invalid[1]

H

RCV

invalid[1]

L

Inputs (VO/VPO, FSE0/VMO,

SPEED, MODE[2], SUSPND, OE,

SOFTCON)

high impedance

high impedance

Table 9:

Power supply configuration overview

Configuration

Special characteristics

connected

connected

Normal mode

-

connected

not connected

Disable mode

(D

+, D−) and V

impedance; VP, VM, RCV:

invalid[1]

not connected

connected

Sharing mode

(D

impedance;

VP, VM driven HIGH;

RCV driven LOW