Overhead Insert/Extract Interfaces And Section/Line Dcc Insert/Extract Interface - NEC UPD98413 User Manual

4.4 Overhead Insert/Extract Interfaces and Section/Line DCC Insert/Extract Interface

The µPD98413 has insert interfaces that input TOH and POH to be transmitted from external peripheral devices,
and extract interfaces that output the contents of received TOH and POH.
And the µPD98413 provides access to both Section and Line Data Communication Channels (DCC). Both
channels are accessed using the serial interface pins TSD, TLD, RSD and RLD, and their associated clocks
TSDCLK, TLDCLK, RSDCLK and RLDCLK respectively.
Both Overhead interface and DCC interface is multiplexed. Which interface to use is selected by the MDPT
register. If both interfaces are enabled, the overhead interface is take precedence.
Table 4-1 Correspondence table of multiplexed OH interface and DCC interface
Pin Name OH Interface
TOHCLK TOHCLK
TTOHFP TTOHFP
TPOHFP TPOHFP
TOHAV TOHAV
TOHD [0] TOHD [0]
TOHD [1] TOHD [1]
Figure 4-20. OH Insert / Extract Interfaces and Section / Line DCC Interfaces
TOH /POH
insert
Interface
and
Section /
Line DCC
insert
Interface
CHAPTER 4 INTERFACES
DCC
Interface
Not Use
TSDCLK
TLDCLK
Not Use
TSD
TLD
TOHCK
µ µ µ µ
PD98413
TTOHFP / TSDCLK
TPOHFP / TLDCLK
TOHD[0] / RSD
TOHD[1] / RLD
TOHAV
PRELIMINARY
Pin Name OH Interface
ROHCLK ROHCLK
RTOHFP RTOHFP
RPOHFP RPOHFP
ROHAV ROHAV
ROHD [0] ROHD [0]
ROHD [1] ROHD [1]
ROHCK
RSDCLK / RTOHFP
RLDCLK / RPOHFP
RSD / ROHD[0]
RLD / ROHD[1]
ROHAV
NEC confidential and Proprietary
DCC
Interface
Not Use
RSDCLK
RLDCLK
Not Use
RSD
RLD
TOH / POH
extract
Interface
and
Section /
Line DCC
extract
Interface
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