hi friend
Some time ago, I write an article about the IC model MT9085AP, but can
not find its technical information, Then in the GOOGLE search on the
site to have this type of technical information, I am pleased to share
for you.
http://www.chinaicmart.com/series-MT9/MT9085AP.html
Description
The MT9085 Parallel Access Circuit (PAC) provides an interface between
an 8 bit, parallel time division multiplexed bus and a serial time
division multiplexed bus. A single PAC device will accept data clocked
out on the parallel bus of the Mitel MT9080 (SMX) and output it on
32/16 time division multiplexed serial bus streams. A second device
can be configured to perform the conversion from the serial format
into an SMX compatible parallel format. The time division, serial
multiplexed streams may operate at 2.048 Mbit/s or at 4.096 Mbit/s.
The PAC generates all framing signals required by the SMX for 1024 and
2048 channel configurations.