TCM8002

DATA PROCESSOR FOR CELLULAR TELEPHONE

SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

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