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Agere Systems Inc.

CA16-Type 2.5 Gbits/s DWDM Transponder with

Advance Data Sheet

16-Channel 155 Mbits/s Multiplexer/Demultiplexer

March 2001

1-1025(F)

Figure 14. FRAMEN Timing

Wavelength Selection

When the wavelength select (WS) pin is at a logic low or open circuited, the optical wavelength from the CA16

transmitter will be a nominal wavelength as determined by the device code purchased. If the WS pin is pulled high

(logic 1), the optical wavelength will change to the next lower ITU channel number (100 GHz spacing,

λ will

increase approximately 0.8 nm).

During the wavelength change, the transmitter’s optical output will be disabled and the wavelength deviation error

alarm will be active until the wavelength has stabilized at its new value. The LSRALM will also be active (logic 1)

during the wavelength change process.

BOUNDARY DETECTION ENABLED

OOF

FRAMEN

FP

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