net2890 ETC-unknow, net2890 Datasheet - Page 16

• Manufacturer Part Number: net2890
• Description: Interface Controller
• Manufacturer: ETC-unknow

Specification
LRESET#
WAKEUP#
BUSPWR#
PWRGOOD#
SOF#
TEST
TESTOUT
NC
VDD
(USB, Core)
VDD
(Local)
VSS
____________________________________________________________________________________
12, 24,
36, 46,
1, 13,
37,43
25,
32
34
22
23
30
47
29
31
48
2
335 Pioneer Way, Mountain View, California 94041
O, 12 mA,
O, 12mA,
O, 12 mA
TP, PU
TP, PU
TEL [phone] FAX [phone]
Power
Power
I, PU
I, PD
GND
I, S
I, S
--
NetChip Technology, Inc., 1999
Rev 2.0, Draft 9, July 16, 1999
http://www.netchip.com
Local Reset. This active low output is asserted when either the
RESET# pin is asserted, or a USB upstream port reset is detected. This
signal is not driven while the device is suspended, but will be pulled
high by the internal pull-up resistor.
Wakeup. This active low input causes the NET2890 to request a USB
remote wakeup if device remote wakeup is enabled.
Bus Powered. This active low input indicates that the logic external to
the NET2890 is powered by the USB bus. If this input is high, then the
external logic is self-powered. This bit is readable by the local CPU
through the MAINCTL configuration register. Alternatively, this bit
can be used as a general input signal.
Power Good. This active low input indicates that an external power
supply used for self-powered mode is operational. This bit is readable
by the local CPU through the MAINCTL configuration register.
Alternatively, this bit can be used as a general input signal.
Start of Frame. This signal pulses low for 8 USB full speed clocks
when the Frame Timer is locked and an SOF token or synthesized SOF
token is detected.
Test. For normal operation, connect this pin to ground.
Test Output. Used for manufacturing test.
No connect.
Core Supply Voltage. Connect this pin to the +3.3V supply voltage to
supply the core and the USB interface.
Local Supply Voltage. Connect this pin to the +3.3V or +5.0V supply
voltage to supply the local interface.
Device Ground. Connect this pin to ground.
NET2890 USB Interface Controller
16