USB2601-NE-03 SMSC Corporation, USB2601-NE-03 Datasheet - Page 20

• Manufacturer Part Number: USB2601-NE-03
• Description: 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS AND HS HUB
• Manufacturer: SMSC Corporation

Revision 1.3 (05-25-05)
6.2
3.3V Analog Power
Voltage Regulator
1.8v Digital Core
3.3v Power & &
No Connect
BUFFER
Ground
NAME
Power
I/O8PU
I/O8PD
OCLKx
Input
O8PU
O8PD
ICLKx
I/O-U
I/O8
AIO
IPU
IPD
O8
IS
I
Notes:
■
■
Buffer Type Descriptions
Hot-insertion capable card connectors are required for all flash media. It is required for SD
connector to have Write Protect switch. This allows the chip to detect MMC card.
nMCE is normally asserted except when the 8051 is in standby mode.
Table 6.1 USB2601/USB2602 Buffer Type Descriptions
Input with internal weak pull-up resistor.
Input with internal weak pull-down resistor.
Input/Output buffer with 8mA sink and 8mA source.
Input/Output buffer with 8mA sink and 8mA source, with an internal weak pull-down
XTAL clock input
Analog Input/Output Defined in USB specification
Input
Input with Schmitt trigger
Input/Output buffer with 8mA sink and 8mA source, with an internal weak pull-up resistor.
resistor.
Output buffer with 8mA sink and 8mA source.
Output buffer with 8mA sink and 8mA source, with an internal weak pull-up resistor.
Output buffer with 8mA sink and 8mA source, with an internal weak pull-down resistor.
XTAL clock output
Analog Input/Output
SYMBOL
VDDA33
VDD18
VDD33
VSS
DIGITAL POWER, GROUNDS, and NO CONNECTS
NC
4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs and HS Hub
BUFFER
TYPE
DATASHEET
20
3.3v Analog PHY Power
+1.8V Core power
All VDD18 pins must be connected together on the
circuit board.
3.3V Power & Regulator Input.
pin 87 supplies 3.3V power to the internal 1.8V VDD18
regulator.
Ground Reference
No Connect. No trace or signal should be
routed/attached to these pins.
DESCRIPTION
DESCRIPTION
SMSC USB2601/USB2602
Datasheet