MIC3003GFL datasheet(8/74 Pages) MICREL

8 / 74 page

Micrel, Inc.

MIC3003GFL

July 2010

M9999-072910-A

hbwhelp@micrel.com or (408) 955-1690

Pin Configuration

24-Pin MLF

® (ML)

Pin Description (MIC3003GFL only)

Pin Number

Pin Name

Pin Function

VDDD

Power supply input for digital functions.

QGPO

Open-drain output. Can be selected (via OEMCFG3 bit 7) to be an open-drain GPO or an active-

low, open-drain, pulsed reset signal output controlled by the status of bits [0-2] of byte A2h: FFh.

GNDD

Ground return for digital functions.

RS0

Digital input. Receiver Rate Select input. OR’ed with soft rate select bit SRS0 to determine the

state of the RRSOUT pin. The state of this pin is always reflected in the RS0S bit.

VIN/INT

If bit 4 (IE) in the USRCTL register is set to 0 (its default value), this pin is configured as an analog

input. If IE bit is set to 1, this pin is configured as an open-drain output.

Analog input: Multiplexed A/D input for monitoring supply voltage, with a 0V to 5.5V input range.

Open-drain output: outputs the internally generated active-low interrupt signal /INT.

CLK

Digital input. Serial clock input.

DATA

Digital I/O, open-drain, bi-directional serial data input/output.

TXDISABLE

Digital input; Active high. The transmitter is disabled when this input is high or the STXDIS bit is

set to 1. The state of this input is always reflected in the TXDIS bit.

TXFAULT

Digital Output; Open-Drain, with programmable polarity. If OEMCFG5 bit 4 is set to 0, a high level

indicates a hardware fault impeding transmitter operation. If OEMCFG5 bit 4 is set to 1, a low level

indicates a hardware fault impeding transmitter operation. The state of this pin is always reflected

in the TXFLT bit.

RS1

Digital Input; Transmitter Rate Select Input; OR’ed with soft rate select bit SRS1 to determine the

state of the TRSOUT pin. The state of this pin is always reflected in the RS1S bit.

VRX

Analog Input. Multiplexed A/D converter input for monitoring received optical power. The input

range is 0 to VREF. A 5-bit programmable EEPOT on this pin provides coarse calibration and

ranging of the RX power measurement.

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