Specifications

AC65/AC75 Hardware Interface Description
Contents
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AC65_AC75_HD_v01.002 Page 4 of 117 2006-10-30
Confidential / Released
3.5.5 Charger Requirements .................................................................................................. 43
3.5.6 Implemented Charging Technique................................................................................. 43
3.5.7 Operating Modes during Charging................................................................................. 44
3.6 Power Saving ................................................................................................................................ 46
3.6.1 Network Dependency of SLEEP Modes........................................................................ 46
3.6.2 Timing of the CTSx Signal in CYCLIC SLEEP Mode 7 ................................................. 47
3.6.3 Timing of the RTSx Signal in CYCLIC SLEEP Mode 9 ................................................. 47
3.7 Summary of State Transitions (Except SLEEP Mode).................................................................. 48
3.8 RTC Backup.................................................................................................................................. 49
3.9 SIM Interface................................................................................................................................. 50
3.9.1 Installation Advice.......................................................................................................... 50
3.10 Serial Interface ASC0.................................................................................................................... 51
3.11 Serial Interface ASC1.................................................................................................................... 52
3.12 USB Interface................................................................................................................................ 53
3.13 I
2
C Interface .................................................................................................................................. 54
3.14 SPI Interface.................................................................................................................................. 55
3.15 Audio Interfaces ............................................................................................................................ 57
3.15.1 Speech Processing........................................................................................................ 58
3.15.2 Microphone Circuit......................................................................................................... 58
3.15.2.1 Single-ended Microphone Input..................................................................................... 59
3.15.2.2 Differential Microphone Input......................................................................................... 60
3.15.2.3 Line Input Configuration with OpAmp............................................................................ 61
3.15.3 Loudspeaker Circuit.......................................................................................................62
3.15.4 Digital Audio Interface (DAI) .......................................................................................... 62
3.15.4.1 Master Mode.................................................................................................................. 63
3.15.4.2 Slave Mode.................................................................................................................... 65
3.16 GPIO Interface .............................................................................................................................. 67
3.16.1 Using the GPIO10 Pin as Pulse Counter....................................................................... 67
3.17 Control Signals.............................................................................................................................. 68
3.17.1 Synchronization Signal .................................................................................................. 68
3.17.2 Using the SYNC Pin to Control a Status LED................................................................ 69
3.17.3 Behavior of the RING0 Line (ASC0 Interface only) ....................................................... 70
3.17.4 PWR_IND Signal ........................................................................................................... 70
4 Antenna Interface .................................................................................................................................. 71
4.1 Antenna Diagnostic ....................................................................................................................... 72
4.2 Antenna Connector ....................................................................................................................... 73
5 Electrical, Reliability and Radio Characteristics ................................................................................ 75
5.1 Absolute Maximum Ratings........................................................................................................... 75
5.2 Operating Temperatures ............................................................................................................... 76
5.3 Storage Conditions........................................................................................................................ 77
5.4 Reliability Characteristics .............................................................................................................. 78
5.5 Pin Assignment and Signal Description ........................................................................................80
5.6 Power Supply Ratings................................................................................................................... 88
5.7 Electrical Characteristics of the Voiceband Part ........................................................................... 91
5.7.1 Setting Audio Parameters by AT Commands ................................................................ 91
5.7.2 Audio Programming Mode............................................................................................. 92
5.7.3 Characteristics of Audio Modes..................................................................................... 93
5.7.4 Voiceband Receive Path ............................................................................................... 94
5.7.5 Voiceband Transmit Path .............................................................................................. 95