USB5742 datasheet(13/48 Pages) MICROCHIP

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DS00002016G-page 13

USB5742

Note 3: Configuration strap values are latched on Power-On Reset (POR) and the rising edge of RESET_N (external

chip reset). Configuration straps are identified by an underlined symbol name. Signals that function as con-

figurations traps must be augmented with an external resistor when connected to a load. Refer to Section

3.4, "Configuration Straps and Programmable Functions" for additional information.

TABLE 3-6:

SPI/SMBUS PIN DESCRIPTIONS

Num

Pins

Symbol

Buffer

Type

Description

SPI_CE_N

O12

Active low SPI chip enable output.

GPIO7

I/O12

General purpose input/output 7.

CFG_NON_REM

Non-Removable Port Configuration Strap.

This configuration strap is used to configure the number of non-

removable ports. Refer to Section 3.4.3, "Non-Removable Port Con-

figuration (CFG_NON_REM)" for more information.

See Note 3.

SPI_CLK

SPI clock output to the serial ROM, when configured for SPI opera-

tion.

SMCLK

OD12

SMBus clock pin, when configured for SMBus slave operation.

GPIO4

I/O6

General purpose input/output 4.

SPI_DO

SPI data output, when configured for SPI operation.

SMDAT

I/O12

SMBus data pin, when configured for SMBus slave operation.

GPIO5

I/O6

General purpose input/output 5.

SPI_DI

SPI data input, when configured for SPI operation.

GPIO9

I/O12

General purpose input/output 9.

CFG_BC_EN

Battery Charging Configuration Strap.

This configuration strap is used to enable battery charging. Refer to

Section 3.4.4, "Battery Charging Configuration (CFG_BC_EN)" for

more information.

See Note 3.

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