M66596FP datasheet(12/131 Pages) RENESAS

12 / 131 page

M66596FP/WG

rev .1.00

2006.3.14

page 12 of 127

1.7.7

External elements integration

The controller has the following external elements built into it. Also, because the VBUS pin can withstand 5 V,

the user system can input the VBUS signal directly to the controller.

(1) Resistors necessary for D+ and D- line control

Resistance of D+ and D-line is built in.

D+ pull up-registor(Peripheral mode)

D+, D- pull-down registor(Host mode)

D+, D- terminating resistors (for Hi-Speed operation)

D+, D- output resistors (for Full-Speed operation)

(2) 48 MHz and 480 MHz PLL

One of three external clocks (12 MHz / 24 MHz / 48 MHz) can be selected and Hi-Speed and Full-Speed

operation carried out.

1.7.8

Low-power sleep state function

The controller is equipped with a low-power sleep state that reduces current consumption.

The low-power sleep state functions effectively under the following circumstances.

(1) When there is no host or peripheral controller connected

(2) When the device state is shifted to the suspended state, and USB data transfer is not necessary

The system is returned from the low-power sleep state to the normal operating state using a designated

interrupt, or by dummy writing to the controller.

M66596FP Datasheet(PDF) 12 Page - Renesas Technology Corp