ISP1161A1BD,151 STEricsson, ISP1161A1BD,151 Datasheet - Page 83

• Manufacturer Part Number: ISP1161A1BD,151
• Manufacturer: STEricsson

Specifications of ISP1161A1BD,151

• Lead Free Status / RoHS Status: Supplier Unconfirmed

ISP1161A1_4
Product data sheet
Fig 38. Suspend and resume timing.
SUSPEND
GOSUSP
WAKEUP
USB bus
INT_N
11.4.1.1 Powered-off application
In
Figure 39
SUSPEND output switches off power to the microcontroller and other external circuits
during the suspend state. The ISP1161A1 DC is woken up through the USB bus (global
resume) or by the ring detection circuit on the telephone line.
Fig 39. SUSPEND and WAKEUP signals in a powered-off modem application.
•
•
•
•
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 D_WAKEUP, or a LOW level on pin CS.
C: indicates remote wake-up. The ISP1161A1 will drive a K-state on the USB bus for
10 ms after pin D_WAKEUP goes HIGH or pin CS goes LOW.
D: after detecting the suspend interrupt, set and clear bit GOSUSP in the DcMode
register.
A
38:
shows a typical bus-powered modem application using the ISP1161A1. The
> 3 ms
suspend
interrupt
USB
V BUS
Rev. 04 — 29 January 2009
DP
DM
idle state
> 5 ms
1.8 ms to 2.2 ms
ISP1161A
V BUS
D
SUSPEND
WAKEUP
B
0.5 ms to 3.5 ms
interrupt
resume
USB single-chip host and device controller
RING DETECTION
C
V CC
RST
8031
10 ms
K-state
004aaa674
ISP1161A1
LINE
© ST-NXP Wireless 2009. All rights reserved.
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