NEC UPD98413 User Manual page 18

Pin Name Serial No.
RDIT0-3
RDIC0-3
CD0-3
CDVREF
LPFC0-
LPFC3
LPFCGND0-
LPFCGND3
BIASC0-3
18
CHAPTER 2 PIN FUNCTION
Address No. I/O Level
I
2.5V
Differential
PECL
I
3.3V
Single-ended
PECL
I
3.3V
PECL
Analog
Analog
Analog
PRELIMINARY
Function
Receive serial data input.
The input data is sampled with the recovered clock from
the internal CDR when the internal CDR mode.
Carrier Detect.
The receive signal detect PECL input indicates the loss
of receive signal power from the Optical module and it is
active high.
Each port has one pin. CD0 corresponds to PORT0,
while CD3 corresponds to PORT3.
This pin input reference potentials (intermediate
potentials) for single-ended PECL input signals (CD0-3).
Loop Filter Capacitor the CDR.
The CDR loop filter capacitor is connected to this pin.
Each port has one pin.
Loop Filter Capacitor the CDR.(GND)
The CDR loop filter capacitor is connected to this pin.
Each port has one pin.
Bias pin for CDR
Connects to analog VDD via 1.1KΩ register
NEC confidential and Proprietary
(2/2)