USB2240 datasheet(17/43 Pages) MICROCHIP

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DS00001979A-page 17

USB224X

6.2

Buffer Type Descriptions

TABLE 6-2:

BUFFER TYPE DESCRIPTIONS

Buffer

Description

Input

IPU

Input with internal weak pull-up resistor

Input with Schmitt trigger

I/O12

Input/output buffer with 12 mA sink and 12 mA source

I/O200

Input/Output buffer 12 mA with FET disabled, 100/200 mA source only when the FET is

enabled

I/O12PD

Input/output buffer with 12 mA sink and 12 mA source with an internal weak pull-down

resistor

I/O12PU

Input/output buffer with 12 mA sink and 12 mA source with a pull-up resistor

O12

Output buffer with 12 mA source

O12PU

Output buffer with 12 mA sink and 12 mA source, with a pull-up resistor

O12PD

Output buffer with 12 mA sink and 12 mA source, with a pull-down resistor

ICLKx

XTAL clock input

OCLKx

XTAL clock output

I/O-U

Analog input/output as defined in the USB 2.0 Specification

I-R

RBIAS

Note:

The DC characteristics are outlined in Section 9.3, on page 32.

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