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Table of Figures
Figure 1: The Block Diagram of Hardware Design............................................................ 5
Figure 2: The Schematic for the Design ............................................................................. 7
Figure 3: The Block Diagram of the Software Design ....................................................... 8
Figure 4: Main Hardware Components of Z8 Speaks ........................................................ 9
Figure 5: VOICEDIRECT Board (front and back) ............................................................... 10
Figure 6: VOICEDIRECT Pinout ......................................................................................... 10
Figure 7: SpeakJet Chip (Left) and Pinout (Right)........................................................... 12
Figure 8: SpeakJet Pin Details and Electrical Specifications ........................................... 13
Figure 9: RTC Module (Left) and RTC Module Schematic (Right) ................................ 13
Figure 10: DS1307 Address Map and Timekeeper Registers........................................... 14
Figure 11: MAX6610 Temperature Sensor Configuration............................................... 14
Figure 12: The Final Hardware Connection for the Z8 Speaks System ........................... 16
Figure 13: Stand-Alone Test for VoiceDirect Hardware .................................................. 18
Figure 14: Hardware Connection for VoiceDirect Communication with Z8 ................... 19
Figure 15: Hardware Test for SpeakJet Demo Mode ....................................................... 21
Figure 16: The Schematic for SpeakJet Communication with Z8.................................... 21
Figure 17: DS1307 Data Transfer..................................................................................... 24
Figure 18: The Flow Chart of Z8 Speak Main Application.............................................. 30
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