Texas Instruments TCM4300 Mcds, MTS1, Mclkin, Mcrw, MTS0, Mwbdfint, OUT1, Paen, Pwrcont, Rbias

1.4Terminal Functions (Continued)

TERMINAL		I/O	DESCRIPTION
NAME	NO.
MCDS	48	I	Microcontroller data strobe. MCDS is configured by the signals present on MTS0 and
			MTS1.
MCLKIN	64	I	Master clock input. The MCLKIN frequency input requirement is 38.88 MHz ± 100 ppm.
			A crystal can be connected between MCLKIN and XTAL to provide an oscillator circuit.
			As an alternative, XTAL can be left open and an external TTL /CMOS-level clock signal
			can be connected to MCLKIN.
MCRW	47	I	Microcontroller read/write. Microcontroller read/write operations are selected in
			accordance with the signals present on MTS0 and MTS1.
MTS0	36	I	Microcontroller type select configuration-control inputs. The interface is controlled by
			MTS (1:0) as follows:
			00 ± Intel microcontroller interface characteristics
MTS1	37	I	10 ± Mitsubishi and Motorola microcontroller 16-bit bus interface characteristics
			01 ± Motorola microcontroller 8-bit bus characteristics
			11 ± Reserved
MWBDFINT	50	O	Microcontroller interrupt request. A wide-band data-ready interrupt is output when the
			WBD demodulator is in analog mode or when a frame interrupt is sent by the DSP in
			digital mode. MWDBFINT can be active high or low according to the levels of the MTS0
			and MTS1 signals.
OUT1	26	O	Output number 1. OUT1 provides a user-defined general purpose data or control signal.
PAEN	25	O	Power amplifier enable. PAEN can be used to enable the transmit power amplifier. This
			signal is active high.
PWRCONT	16	O	Power amplifier (PA) power control. The PWRCONT DAC output can be used to control
			the amount of power output from the PA.
RBIAS	99	I	Input for bias current-setting resistor. To achieve correct bias voltage, a 100-kΩ, 1%
			tolerance resistor connected between RBIAS and AVSS is recommended.
REFCAP	100	I	Reference decoupling capacitor. For proper decoupling, It is recommended that a
			3.3 μF capacitor in parallel with a 470-pF capacitor be connected between REFCAP and
			ground.
RSINL	59	I	Reset input low. An active low applied to RSINL resets the TCM4300.
RSSI	2	I	Received signal strength indicator. RSSI samples received signal strength.
RSOUTH	60	O	Reset out high. An active high is output from RSOUTH for 10 ms after the TCM4300 is
			powered up.
RSOUTL	61	O	Reset out low. An active low is output from RSOUTL for 10 ms after the TCM4300 is
			powered up.
RXIN	8	I	Negative receive input. The in-phase differential negative baseband received signal is
			applied to RXIN.
RXIP	9	I	Positive receive input. The in-phase differential positive baseband received signal is
			applied to RXIP.
RXQN	5	I	Negative receive input. The quadrature negative baseband received signal is applied
			to RXQN.
RXQP	6	I	Positive receive input. The quadrature differential positive baseband received signal is
			applied to RXQP.

Intel is a trademark of Intel Corporation.

Mitsubishi is a trademark of Mitsubishi Inc.

Motorola is a trademark of Motorola, Inc.

1±6