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參數(shù)資料
| 型號： | ATJ2085 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | ATJ2085 is a single-chip for flash-based digital music player |
| 中文描述： | ATJ2085是一種單芯片基于閃存的數(shù)字音樂播放器 |
| 文件頁數(shù)： | 21/35頁 |
| 文件大?。?/td> | 609K |
| 代理商： | ATJ2085 |
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ATJ2085 DATA SHEET Actions
Copyright 2004 Actions Semiconductor Co., Ltd. All rights reserved.
VER 1.5
Page 20
8/18/2004
These two endpoints employ two independent FIFO for bulk or isochronous transfers. Endpoint 0
and endpoint 3 have 8 bytes maximum packet size. There are 4 interrupt requests for each
endpoint respectively. Generally, this setting should be satisfying for most practical needs.
4.15.1 Hard Core
The USB block includes a USB function with one upstream port. The USB port interfaces to the
micro-controller through a programmable-speed serial interface engine (SIE). The SIE allows the
micro-controller to communicate with the USB host.
4.15.2 Interrupts
Two groups of interrupt requests are used to notify the micro-controller that there is some USB
event pending to be handled. One is Global Interrupt group, and the other is Endpoint Interrupt
group. Whenever an interrupt is generated, the SIE will send a low pulse to the micro-controller.
The IRQ will not be invalidated until all the pending interrupts are cleared.
4.16 FM Interface
ATJ2085 can be used as a controller with Philips FM5767 module. 2-wire or 3-wire also can be
used to control the module.
5. Electrical Characteristics
5.1 Absolute Maximum Ratings
Parameter
Symbol
Typical
Rating
Unit
VDD
2.0V
-0.5 to +2.7
V
Supply voltage
VCC
3.0V
-0.5 to +3.6
V
VCC >= 3.3
-0.5 to +3.9
V
Input voltage
Vi
VCC < 3.3
-0.5 to VCC+0.6
V
Storage
temperature
T
stg
-65 to +150
Note:
1. TO = 25
(Operating Temperature)
2. Do not short-circuit two or more output pins simultaneously.
3. If even one of the above parameters exceeds the absolute maximum ratings even momentarily,
the quality of the product may be degraded. The absolute maximum ratings, therefore, specify
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