ISP1561 データシートの表示（PDF） - Philips Electronics

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ISP1561

Hi-Speed USB PCI host controller

Philips Electronics 

Philips Semiconductors

ISP1561

USB PCI host controller

Table 2: Pin description…continued

Symbol[1]

Pin Type Description

AMB4

126 I/O

amber LED indicator output for the USB downstream port 4

(open-drain); this pin acts as an input only during the

power-up sequence and thereafter, acts as an output.

Bi-directional pin; push-pull input; three-state output; 10 ns

slew rate control; TTL; 5 V tolerant

GRN4

DGND

127 I/O

128 -

1 — FF in PMC register; supports D3cold

0 — EF in PMC register; does not support D3cold

green LED indicator output for the USB downstream port 4

(open-drain) The LED is OFF by default; the LED can be

programmed to enable it to blink. Bi-directional pin;

push-pull input; three-state output; 10 ns slew rate control;

TTL; 5 V tolerant

digital ground

[1] Symbol names ending with a ‘#’ (for example, NAME#) represent active LOW signals for PCI pins.

Symbol names with an overscore (for example, NAME) represent active LOW signals for USB pins.

[2] The pull-up resistor should be always present even if I2C EEPROM is not used.

[3] If legacy support is not used, connect this pin to ground.

9397 750 10015

Product data

Rev. 01 — 06 February 2003

© Koninklijke Philips Electronics N.V. 2003. All rights reserved.

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