UPD98404 Datasheet, PDF (16/36 Pages) NEC – ADVANCED ATM SONET FRAMER

1.7 Recommended connection of unused pins
Pin
Recommended Connection of Unused Pins
Each input pin at level
other than P-ECL
Each input pin at P-ECL
level
Connect to ground (parallel input pin in serial mode)
RPD0 through RPD7, RPC, TFC
(Multi-PHY pins in single PHY mode)
TADD0 to TADD4, RADD0 through RADD4
(others)
TFSS (essential)
Pull up True(+) pins (TFKT, RCIT, RDIT) to 3.3 V. Connect
Complement(−) pins (TFKC, RCIC, RDIC) to ground.
Output pin
Output pin at P-ECL level
AIN1
Leave open.
(Parallel input pins in serial mode)
TPD0 to TPD7
TPC
(others)
TxFP, RxFP, TCL, RCL
Leave open.
TDOT, TDOC, TCOT, TCOC
Leave Open.
Because noise on this pin affects the characteristics of the
internal PLL, do not wire a clock line in the vicinity.
µPD98404
16
Data Sheet S11822EJ4V0DS00