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TCM8002 Datasheet(数据表) 4 Page - Texas Instruments |
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TCM8002 Datasheet(HTML) 4 Page - Texas Instruments |
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4 page 
TCM8002 DATA PROCESSOR FOR CELLULAR TELEPHONE SLWS008C – SEPTEMBER 1994 – REVISED JUNE 1996 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions† TERMINAL‡ I/O DESCRIPTION NAME NO. I/O DESCRIPTION CLKOUT/PO4(1) 2 O Clock output / programmable output #4, bit 1. A 2.56-MHz clock signal is output on this terminal or the device can be set so that it is bit 1 of PO4. CS 33 I Chip select (active low). This is the chip select input from the microcontroller. DATAIN 35 I Data input. Serial data from the microcontroller is input on this terminal. DATAOUT 34 O Data output. This is the serial data output to the microcontroller (3-state). DCLK 36 I Data clock. This is the serial microcontroller interface clock input. HCLK/PO4(3) 4 O TCM8010 interface clock / programmable output #4, bit 3. A clock signal to the TCM8010 or bit 3 of programmable output 4 is output on this terminal. HDATA/PO4(0) 1 I/O TCM8010 interface data line/programmable output #4, bit 0. This terminal is used for data to and from the TCM8010, or is bit 3 of programmable output 4. HCS/PO4(2) 3 O TCM8010 interface chip select output (active-low) / programmable output #4, bit 2. This terminal selects the TCM8010, or is bit 2 of programmable output 4. INTRPT 37 O Interrupt output. This is the interrupt line to the microprocessor. PIO1(0 – 7) 9–16 I/O Programmable I/O port #1, bits 0 – 7. This 8-bit port can be configured as either inputs or outputs (microcontroller port expansion). PIO2(0 – 7) 18 – 25 I/O Programmable I/O port #2, bits 0 – 7. This 8-bit port can be configured as either inputs or outputs (microcontroller port expansion). PIO3(0 – 3) 26 – 29 I/O Programmable I/O port #3, bits 0 – 3. This 4-bit port can be configured as either inputs or outputs (microcontroller port expansion). RAEN/PO4(6) 43 O Receive audio enable output/programmable output #4, bit 6. This terminal is used to enable the receive audio section of the phone, or is bit 6 of programmable output 4 (open drain). RCCBUSY/PO4(4) 32 O RECC busy status/programmable output #4, bit 4. This terminal outputs the status result of the majority vote of the three most recent busy/idle bits, or is bit 4 of programmable output 4. RESET 40 I Reset input, active low. A low applied to this terminal resets the TCM8002 and loads the default values listed in the write map. RFEN 30 O RF enable. This terminal is used to enable the transmitter section of the phone (open drain). RXIN 8 I Baseband Manchester data input. Manchester-encoded data from control or voice channel is input on this terminal. SATIN 7 I SAT input. Square-wave SAT data from the TCM8010 audio processor is input on this terminal. SATOUT 5 O Regenerated SAT output. Regenerated SAT data is output to the TCM8010 audio processor on this terminal. TAEN/PO4(7) 44 O Transmit audio enable/programmable output #4, bit 7. The logic level on this terminal changes state during RVC message or ST transmission, or is bit 7 of programmable output 4 (open drain). TMZERO/PO4(5) 38 O Timer zero/programmable output #4, bit 5. The logic level on this terminal changes state when the counter/timer passes or reaches zero, or is bit 5 of programmable output 4. TXOUT 6 O Transmit data output. Encoded transmit data is output to the TMC8010 audio processor on this terminal. VDD 39 Positive supply voltage. Input is 3.3-V or 5-V. VSS 17 Ground supply voltage. WDOUT 31 O Watchdog timer output. A logic-low pulse is output on this terminal when the watchdog timer times out. XTAL1 41 I Crystal terminal 1/external clock source input. An external crystal is connected to this terminal for the internal clock oscillator. An external clock signal can also be input on this terminal. XTAL2 42 O Crystal terminal 2. An external crystal is connected to this terminal for the internal clock oscillator. † All inputs feature Schmitt triggers. All of the PIO terminals also feature optional 10- µA pullups. ‡ ( ) = bit count when in the terminal column |
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