ATJ2085 ETC, ATJ2085 Datasheet - Page 16

• Manufacturer Part Number: ATJ2085
• Description: Atj2085 is a Single-chip for Flash-based Digital Music Player
• Manufacturer: ETC

DCDIS
ATJ2085
4.9 ADC
Copyright © 2004 Actions Semiconductor Co., Ltd. All rights reserved.
0
0
1
1
VER 1.5
There are two pins for mode configurations. One is “DCDIS”; the other is “BATSEL”, the truth
table as follow:
The pin of “DCDIS” has an on-chip pull down resistor. There is a built-in super low speed and low
resolution ADC for battery monitor in ATJ2085. The level of minimum battery voltage warning can
be configured by registers; the range is from 0.98V to 1.22V. The voltage level of resetting system
can be controlled by register; the range is from 0.9V to 1.14V.
There are 3 Analog-to-Digital Converters integrated in ATJ2085: 16-bit Σ-∆ ADC is for MIC/FM
Input/Line Input, 8-bit SAR ADC for Line Controller, and 4-bit ADC for Battery Monitor
BATSEL DC/DC1(VDD) DC/DC2(VCC) Regulator
0
1
0
1
Yes
No
No
No
WWW.MP3JS.COM.CN
Yes
Yes
Yes
DF
No
DF
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Page 15
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DATA SHEET
4
Yes
Yes
Yes
No
One
components, but more efficiency
Two battery
One
components, but less efficiency
USB power or DC power line-in
battery
battery
Mode descriptions
with
with
8/18/2004
Actions
more
less
external
external