Smsc USB97C242 Manual do Utilizador descarregar pdf (Página 22)

USB 2.0 Flash Drive Controller

Datasheet

SMSC USB97C242 Page 22 Revision 1.4 (05-03-07)

DATASHEET

Chapter 11 GPIO Usage Table

Table 11.1 - GPIO Usage

NAME

ACTIVE

LEVEL

SYMBOL DESCRIPTION AND NOTE

GPIO1 H Flash Media Activity LED Indicates media activity. Media or

USB cable must not be removed

with LED lit. Active High.

GPIO2 H Ready/Busy# 1/4 Ready/Busy# line from NAND

Flash chips 0, or 0 & 4

GPIO3 H V_BUS USB V bus dectect

GPIO4 H Ready/Busy# for Chips 1/5 Ready/Busy# line from NAND

Flash chips 1, or 1 & 5

GPIO5 H HS_IND/Ready/Busy# 2/6 In Rom -03; HS_LED output

indicator; in later ROM patterns,

the Ready/Busy# line from NAND

Flash chips 2, or 2 & 6

GPIO6 H A16 A16 address line when external

Rom is used; unused output

otherwise.

GPIO7 H Ready/Busy# 3/7 Ready/Busy# line from NAND

Flash chips 3, or 3 & 7

1 2 ... 17 18 19 20 21 22 23

Sem comentários

Smsc USB97C242 Manual do Utilizador Página 22