ISP1181ABS NXP Semiconductors, ISP1181ABS Datasheet - Page 22

• Manufacturer Part Number: ISP1181ABS
• Manufacturer: NXP Semiconductors

Specifications of ISP1181ABS

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
9397 750 13959
Product data
Fig 6. Suspend and resume timing.
SUSPEND
USB BUS
WAKEUP
GOSUSP
INT_N
11.1.1 Powered-off application
In
Figure 7
SUSPEND output switches off power to the microcontroller and other external circuits
during the suspend state. The ISP1181A is woken up through the USB bus (global
resume) or by the ring detection circuit on the telephone line.
•
•
•
•
A
Figure
A: indicates the point at which the USB bus enters the idle state.
B: indicates resume condition, which can be a 20 ms K-state on the USB bus, a
HIGH level on pin WAKEUP, or a LOW level on pin CS.
C: indicates remote wake-up. The ISP1181A will drive a K-state on the USB bus
for 10 ms after pin WAKEUP goes HIGH or pin CS goes LOW.
D: after detecting the suspend interrupt, set and clear bit GOSUSP in the Mode
register.
interrupt
suspend
> 3 ms
shows a typical bus-powered modem application using the ISP1181A. The
6:
Rev. 05 — 08 December 2004
idle state
> 5 ms
1.8 ms to 2.2 ms
D
B
0.5 ms to 3.5 ms
interrupt
resume
Full-speed USB peripheral controller
C
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
K-state
10 ms
ISP1181A
004aaa359
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