SMSC USB97C242 - Manual (Page 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