Table of Contents
Advertisement
15
14
13
12
11
Figure 9.5 Programmable Flag Data Register (ADSP-2181)
9.7
POWERDOWN
The ADSP-2171, ADSP-2181, and ADSP-21msp58/59 provide a
powerdown feature that allows the processor to enter a very low power
dormant state through hardware or software control. In this CMOS
standby state, power consumption is less than 1 mW (approximate). (Refer
to the processor data sheet for exact power consumption specifications.)
The powerdown feature is useful for applications where power
conservation is necessary, for example in battery-powered operation.
Features of powerdown include:
• Internal clocks are disabled
• Processor registers and memory contents are maintained
• Ability to recover from powerdown in less than 100 CLKIN cycles
• Ability to disable internal oscillator when using crystal
• No need to shut down clock for lowest power when using external
oscillator
• Interrupt support for executing "housekeeping" code before entering
powerdown and after recovering from powerdown
• User selectable powerup context
System Interface
Programmable Flag Data
10
9
8
7
6
5
4
3
2
1
PFDATA
9
0
DM(0x3FE5)
9 – 17
- Quick Links:
- Overview
Hide quick links:
Advertisement
Table of Contents
