Table of Contents
Advertisement
AC75 Hardware Interface Description
Strictly confidential / Preliminary
0
Document History
Preceding document: "AC75 Hardware Interface Description" Version 00.020
New document: "AC75 Hardware Interface Description" Version 00.202
Chapter
What is new
3.3.2
New chapter: Signal States after Startup.
3.3.1.1
More detailed description of IGT timing depending on Power-down or Charge-only
mode.
Added further details on timing after power-up.
Added alert message "SHUTDOWN after Illegal PowerUp"
3.3.1.2
New chapter: Configuring the IGT Line for Use as ON/OFF Switch
3.3.4.1
Revised Table 7: Temperature dependent behavior.
3.3.4.2,
Replaced resp. new sections on Deferred Shutdown at Extreme Temperature
3.3.4.3
Conditions and Monitoring the Board Temperature of AC75.
3.4
Minor text change.
3.3.1.3,
To change from Charge-only mode to Normal mode the IGT line must be pulled low
3.5.7, 3.7
for at least 1s and then released. High state of IGT lets AC75 enter Normal mode.
3.5.4
Replaced recommended polymer battery with new VARTA PoLiFlex® battery
3.5.7, 3.7
Described transition from Charge-only to Normal mode by switching off Airplane
mode.
3.6
Added chapter on power saving.
3.12
AC75 does not support generic USB 2.0 High Speed hubs.
3.15.2.2
Added remarks on VMIC behaviour.
3.15.2.3
Replaced remark on VMIC behaviour.
3.15.4
Added Table 15: Configuration combinations for the PCM interface
5.1
New maximum values for voltage at analog pins with VMIC on/off.
5.2
Specified operating board temperature.
Table 22: Temperature specified for charging is battery temperature (not ambient)
5.5
Specified internal pull-down resistors 330kΩ at TXD0, RXD0, TXD1, RXD1. Changed
all
V
min values from
IH
Corrected overview table: USB_DP was listed in wrong row.
5.7
New chapter: Electrical Characteristics of the Voiceband Part
7
Modified description for Java "System.out" in sample application.
9.3
New datasheet for recommended VARTA PoLiFlex® Lithium polymer battery.
AC75_HD_V00.202
2.0 to 2.15V.
Page 7 of 120
s
27.04.2006
Advertisement
Table of Contents
