USBN9603 National Semiconductor, USBN9603 Datasheet - Page 29
USBN9603
Manufacturer Part Number
USBN9603
Description
USBN9603 Universal Serial Bus Full Speed Function Controller with Enhanced DMA Support
Manufacturer
National Semiconductor
Datasheet
1.USBN9603.pdf
(60 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
USBN9603-28M
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
USBN9603-28M/NOPB
Manufacturer:
nsc
Quantity:
2 690
Company:
Part Number:
USBN9603-28MX
Manufacturer:
NSC
Quantity:
189
Part Number:
USBN9603-28MX
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
USBN9603-28MX/NOPB
Manufacturer:
NS
Quantity:
3 000
Part Number:
USBN9603-28MX/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
USBN960328MX
Manufacturer:
NSC
Quantity:
4 465
6.0 Functional Description
The USBN9603 exits Halt mode in response to one of the following wake-up events:
When a valid wake-up event is detected, the device returns to active mode after a power-up delay of 2
elapsed. This delay is established by a 14-bit delay counter, which ensures that the 24 MHz oscillator has reached a stable
condition and the clock doubler locks and generates a stable 48 MHz signal. After this start-up delay, the clock signal can
be output on the CLKOUT pin.
A high-to-low transition is detected on the CS pin and the associated wake-up enable bit, ENUC in the WKUP regis-
ter, is set to 1.
Any activity on the USB is detected (USB not idle) and the associated wake-up enable bit, ENUSB in the WKUP reg-
ister is set to 1. (The node can detect any USB activity only when it is attached.)
Power-On Reset
External RESET
Wake-Up
Event
Halt
(Continued)
Figure 24. Power Saving Modes
Halt On Suspend
or Force Halt
Power-Up
Delay
29
2
14
Power-Up Delay
Timeout
cycles
Active
14
clock cycles has
www.national.com