Theory of Operation
: Controller
3-35
3.2.4.8.8 CPLD (U6101)
The CoolRunner IC is a complex programmable logic device (CPLD) programmed specifically for the
APX product line. The CoolRunner IC is flash based and comes pre-programmed. It is contained in
an 8x8mm, 132 BGA package with 0.5mm ball spacing. The primary functions of the CPLD are clock
generation, GPIO expansion, SSI clock and frame sync direction control, F2 multiplexing, secure
data control, main display off-loading, and clock inversion.
An external linear regulator, U6508, supplies the CPLD's 1.875 V core voltage. The 1.875 V core
voltage is used for the CPLD’s internal logic and I/O buffers. MAKO's 24.576 MHz clock source is
used by the CPLD to generate a 32.768 kHz clock for OMAP booting, real time clock/timer, and for
GPS. It is also used to generate 4.096 MHz for the MACE IC.
The CPLD is controlled through OMAP's EMIFS interface. It supports 31 configurable GPIOs. It also
supports 20 input only pins that are accessible through an EMIFS read operation. Some of the
GPIOs supported by the CPLD include GCAI_GPIO_0, F2_PARAMP_MON, and USB_CURR_LIM.
Some examples of the inputs the CPLD is programmed to support are some of the top and side
controls buttons (MON, SIDE_1 and SIDE_2) and board ID.
Figure 3-27
below shows the basic CPLD interfaces.
Figure 3-27. CPLD Block Diagram
EMIFS
24MHz
F2 Timer
F2 Select
GCAI GPIO0
KEYLD_MISSING
KL_SWITCH
CPLD
MAKO
OMAP 1710
Processor
32kHz to OMAP
32kHz to GPS
4.096MHz to MACE
GPIOs
GPIs
Содержание Astro APX 3000
Страница 1: ...APXTM TWO WAY RADIOS APX 3000 DETAILED SERVICE MANUAL ...
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Страница 4: ...Notes ...
Страница 6: ...vi Document History Notes ...
Страница 10: ...x Table of Contents Notes ...
Страница 12: ...xii List of Tables Notes ...
Страница 18: ...xviii List of Figures Notes ...
Страница 22: ...xxii CommercialWarranty Notes ...
Страница 46: ...3 20 Theory of Operation Main Board Notes ...
Страница 84: ...3 58 Theory of Operation Bluetooth Notes ...
Страница 147: ...Troubleshooting Waveforms Clocks 6 3 6 2 2 4 MHz Clock Trace 1 Trace recorded at R6113 Figure 6 2 4 MHz Clock Waveform ...
Страница 154: ...6 10 Troubleshooting Waveforms Audio SSI 6 3 4 BCLK Trace 1 Trace recorded at R6107 Figure 6 9 Audio SSI BCLK Waveform ...
Страница 156: ...6 12 Troubleshooting Waveforms RX SSI 6 4 2 DA Trace 1 Trace recorded at R2805 Figure 6 11 RX SSI DA Waveform ...
Страница 157: ...Troubleshooting Waveforms RX SSI 6 13 6 4 3 FSYNC Trace 1 Trace recorded at R2804 Figure 6 12 RX SSI FSync Waveform ...
Страница 159: ...Troubleshooting Waveforms TX SSI 6 15 6 5 2 DA Trace 1 Trace recorded at R2817 Figure 6 14 TX SSI DA Waveform ...
Страница 160: ...6 16 Troubleshooting Waveforms TX SSI 6 5 3 FSYNC Trace 1 Trace recorded at R2807 Figure 6 15 TX SSI FSync Waveform ...
Страница 161: ...Troubleshooting Waveforms SPI 6 17 6 6 SPI 6 6 1 CLK Trace 1 Trace recorded at R2803 Figure 6 16 SPI CLK Waveform ...
Страница 162: ...6 18 Troubleshooting Waveforms SPI 6 6 2 CS Trace 1 Trace recorded at R6602 Figure 6 17 CS Waveform ...
Страница 164: ...6 20 Troubleshooting Waveforms I2C BUS 6 7 2 SCL 5V Trace 1 Trace recorded at R2204 Figure 6 19 I2C Bus SCA 5V Waveform ...
Страница 165: ...Troubleshooting Waveforms I2C BUS 6 21 6 7 3 SDA Trace 1 Trace recorded at R6209 Figure 6 20 I2C Bus SDA Waveform ...
Страница 169: ...Troubleshooting Waveforms USB 6 25 6 10 USB 6 10 1 D Trace 1 Trace recorded at TP F_GCAI_USB Figure 6 24 USB D Waveform ...
Страница 170: ...6 26 Troubleshooting Waveforms USB 6 10 2 D Trace 1 Trace recorded at TP F_GCAI_USB Figure 6 25 USB D Waveform ...
Страница 172: ...6 28 Troubleshooting Waveforms SDRAM 6 11 2 CLKX Trace 1 Trace recorded at TP6308 Figure 6 27 SDRAM CLKX Waveform ...
Страница 208: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Страница 222: ...7 14 Troubleshooting Tables List of Board and IC Signals Notes ...
Страница 282: ...8 60 Schematics Boards Overlays and Parts Lists Main Board Block UHF1 84012513001_A Notes ...
Страница 338: ...8 116 Schematics Boards Overlays and Parts Lists Main Board Block 700 800 MHz 84012501002 Notes ...
Страница 390: ...8 168 Schematics Boards Overlays and Parts Lists Main Board Block VHF 84012512001_A Notes ...
Страница 456: ...9 8 Debugging Fixture Powering up Covert Board Notes ...
Страница 468: ...Glossary 10 Glossary Notes ...
Страница 472: ...Index 4 Index Notes ...
Страница 473: ......