MIC3001GML Micrel Inc, MIC3001GML Datasheet - Page 8

• Manufacturer Part Number: MIC3001GML
• Description: IC FOM MANAGEMENT W/CALIBR 24MLF
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of MIC3001GML

• Protocol: SDHj Sonet
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 24-MLF®, QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Drivers/receivers: -
• Other names: 576-1753-5; MIC3001GML

Micrel, Inc.
Pin Description
August 2004
Pin Number
11
12
13
14
15
16
17
18
19
20
21
22
23
24
RSOUT (GPO)
TXDISABLE
Pin Name
VMOD–
VMOD+
RXLOS
GNDD
COMP
VBIAS
VDDD
DATA
RSIN
CLK
VIN
NC
Digital Input; Active High. The transmitter is disabled when this line is high or the STXDIS bit
is set. The state of this input is always reflected in the TXDIS bit.
Digital I/O; Open-drain. Bi-directional serial data input/output.
If bit 4 (IE) in USRCTL register is set to 0 (default), this pin is configured as analog input. If
IE bit is set to 1, this pin is configured as open-drain output. Analog Input: Multiplexed A/D
input for monitoring supply voltage. 0V to 5.5V input range. Open-drain output: outputs the
internally generated interrupt signal /INT.
Digital Input; Rate Select Input; ORed with rate select bit to determine the state of the
RSOUT pin. The state of this pin is always reflected in the RSEL bit.
Ground return for digital functions.
No connection. This pin is used for test purposes and must be left unconnected.
Power supply input for digital functions.
Digital Output; Active-High/Open-Drain. Indicates the loss of the received signal as indicated
by a level of received optical power below the programmed RXLOS comparator threshold;
may be wire-ORed with external signals. Low indicates normal operation. RXLOS is de-
asserted when VRX > LOSFLTn. The LOS bit reflects the state of RXLOS whether driven by
the MIC3001 or an external circuit.
Digital Output. Open-Drain or push-pull. When used as rate select output, this output is
controlled by the SRSEL bit ORed with RSIN input and is open drain only. When used as a
general-purpose, non-volatile output, it is controlled by the GPO configuration bits in
OEMCFG3.
Analog Output, compensation terminal. Connect a capacitor between this pin and GNDA or
V DDA with appropriate value to tune the APC loop time constant to a desirable value.
Analog Output. Buffered DAC output capable of sourcing or sinking up to 10mA under
control of the APC function to drive an external transistor for laser diode D.C. bias. The
output and feedback polarity are programmable to accommodate either a NPN or an PNP
transistor to drive a common-anode or common-cathode laser diode.
Analog Input. Inverting terminal of VMOD buffer op-amp. Connect to V MOD + (gain = 1) or
feedback resistors network to set a different gain
Analog Output. Buffered DAC output to set the modulation current on the laser driver IC.
Operates with either a 0– V REF or a (V DD –V REF ) – V DD output swing so as to generate
either a ground-referenced or a V DD referenced programmed voltage. A simple external
circuit can be used to generate a programmable current for those drivers that require a
current rather than a voltage input. See “Applications Information” section for more details.
Pin Function
Digital Input; Serial bit clock input.
8
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MIC3001