USB97C202 ETC, USB97C202 Datasheet - Page 10

• Manufacturer Part Number: USB97C202
• Description: ATA/ATAPI CONTROLLER
• Manufacturer: ETC

SMSC USB97C202
General
Purpose I/O
RESET input nRESET
Test input
GPIO[1:7]
nTest[0:2]
VDD
VDDIO
VDDP
VSSP
VDDA
VSSA
GND
NC
POWER, GROUNDS, and NO CONNECTS
DATASHEET
IO20
IS
IP
Page 10
MISC
These general purpose pins may be used
either as inputs, edge sensitive interrupt inputs,
or outputs. When using internal ROM mode,
these pins have the following assignments:
GPIO1: USB HS Indicator; active high
GPIO2: Serial EEPROM (93LC66 type) Chip
Select
GPIO3: USB VBUS Detect Input
GPIO4: Serial EEPROM Data In/Out
GPIO5: ATA Drive Reset
GPIO6: A16 control line for external program
Flash memory when using firmware upgrade
capability (external ROM operation only)
GPIO7: Serial EEPROM Clock output
This active low signal is used by the system to
reset the chip. The active low pulse should be
at least 100ns wide.
These signals are used for testing the chip.
User should normally leave them unconnected.
For board testing, all pads except these test
inputs are included in an XNOR chain, such
that by tying nTEST2 low, nIOR will reflect the
toggling of a signal on each pin. Circuit board
continuity of the pin solder connections after
assembly can be checked in this manner
+2.5V Core power
+3.3V I/O power
+2.5 Analog power
Analog Ground Reference
+3.3V Analog power
Analog Ground Reference
Ground Reference
No Connect. These pins should not be
connected externally.
USB 2.0 ATA/ATAPI Controller
Revision 1.2 (02-04-04)
Datasheet