User's Manual

AC65/AC75 Hardware Interface Description

Confidential / Preliminary

AC65/AC75_hd_v00.372 Page 8 of 118 2006-08-03

Chapter What is new

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,

3.3.4.3

Changed description.

Added new section.

3.4 Minor text change.

3.3.1.3,

3.5.6, 3.7

To change from Charge-only mode to Normal mode the IGT line must be pulled low

for at least 1s and then released. High state of IGT lets AC75 enter Normal mode.

3.5.6, 3.7 Added 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

min values from 2.0 to 2.15V. 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 New datasheet for recommended VARTA PoLiFlex® Lithium polymer battery.