CX86500 Ver la hoja de datos (PDF) - Conexant Systems
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CX86500 Datasheet PDF : 82 Pages
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CX86500 SCXV.xx Modem Data Sheet
3.3 CX86500 Electrical Characteristics ............................................................................................................................... 3-16
3.4 CX20493 LSD 28-Pin QFN Hardware Pins and Signals ................................................................................................ 3-17
3.4.1 CX20493 LSD 28-Pin QFN Signal Summary ............................................................................................... 3-17
3.4.1.1 CX86500 Interface (Through DIB)............................................................................................ 3-17
3.4.1.2 Telephone Line Interface .......................................................................................................... 3-17
3.4.1.3 Voltage References................................................................................................................... 3-17
3.4.1.4 General Purpose Input/Output.................................................................................................. 3-18
3.4.1.5 No Connects ............................................................................................................................. 3-18
3.4.2 CX20493 LSD Pin Assignments and Signal Definitions ............................................................................... 3-18
3.5 CX20493 LSD 32-Pin LQFP Hardware Pins and Signals .............................................................................................. 3-22
3.5.1 CX20493 LSD 32-Pin LQFP Signal Summary .............................................................................................. 3-22
3.5.1.1 CX86500 Interface (Through DIB)............................................................................................ 3-22
3.5.1.2 Telephone Line Interface .......................................................................................................... 3-22
3.5.1.3 Voltage References................................................................................................................... 3-22
3.5.1.4 General Purpose Input/Output.................................................................................................. 3-23
3.5.1.5 No Connects ............................................................................................................................. 3-23
3.5.2 CX20493 LSD 32-Pin LQFP Pin Assignments and Signal Definitions .......................................................... 3-23
3.6 CX20493 LSD GPIO DC Electrical Characteristics ........................................................................................................ 3-27
3.7 Electrical and Environmental Specifications ................................................................................................................. 3-28
3.7.1 Operating Conditions, Absolute Maximum Ratings, and Power Requirements ........................................... 3-28
3.7.2 Interface and Timing Waveforms ................................................................................................................. 3-30
3.7.2.1 Serial DTE Interface.................................................................................................................. 3-30
3.7.2.2 Parallel Host Bus Interface ....................................................................................................... 3-31
3.7.2.3 Voice Pass-Through Interface – 14-Bit PCM............................................................................ 3-33
3.8 Crystal and Clock Specifications................................................................................................................................... 3-33
4. Parallel Host Interface ..........................................................................................................................4-1
4.1 Overview ......................................................................................................................................................................... 4-1
4.2 Register Signal Definitions ............................................................................................................................................. 4-3
4.2.1 IER - Interrupt Enable Register (Addr = 1, DLAB = 0) .................................................................................... 4-3
4.2.2 FCR - FIFO Control Register (Addr = 2, Write Only) ....................................................................................... 4-4
4.2.3 IIR - Interrupt Identifier Register (Addr = 2) .................................................................................................. 4-5
4.2.4 LCR - Line Control Register (Addr = 3) .......................................................................................................... 4-6
4.2.5 MCR - Modem Control Register (Addr = 4).................................................................................................... 4-7
4.2.6 LSR - Line Status Register (Addr = 5)............................................................................................................ 4-7
4.2.7 MSR - Modem Status Register (Addr = 6) ..................................................................................................... 4-9
4.2.8 RBR - RX Buffer (Receiver Buffer Register) (Addr = 0, DLAB = 0) ................................................................ 4-9
4.2.9 THR - TX Buffer (Transmitter Holding Register) (Addr = 0, DLAB = 0).......................................................... 4-9
4.2.10 Divisor Registers (Addr = 0 and 1, DLAB = 1).............................................................................................. 4-10
4.3 Receiver FIFO Interrupt Operation ................................................................................................................................ 4-10
4.3.1 Receiver Data Available Interrupt ................................................................................................................. 4-10
4.3.2 Receiver Character Timeout Interrupts......................................................................................................... 4-11
4.4 Transmitter FIFO Interrupt Operation ........................................................................................................................... 4-11
4.4.1 Transmitter Empty Interrupt......................................................................................................................... 4-11
5. Package Dimensions ............................................................................................................................5-1
6. Recommended TSSOP Surface Mount Land Pattern ............................................................................6-1
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