peb2035 ETC-unknow, peb2035 Datasheet - Page 20

• Manufacturer Part Number: peb2035
• Description: Communications Advanced Cmos Frame Aligner
• Manufacturer: ETC-unknow

1.3
P-LCC
Pin No.
42
43
Semiconductor Group
Pin Definitions and Functions (cont’d)
P-DIP
Pin No.
38
39
Symbol
XDOP
XDOM
Input (I)
Output (O)
O
O
Function
Receive Channel Parity Transmit Data Out Plus
Transmit Data Out Minus
These outputs for transmitted dual rail PCM(+)
and PCM(–) route signals can provide
– half bauded signals with 50 % duty cycle (bit
– full bauded signals with 100 % duty cycle (bit
The data will be clocked off on positive transitions
of XRCLK in both cases. Output sense is selected
by bit XC0.XDOS (after RESET: active low).
Signal encoding depends on the selected PCM
mode (MODE.PMOD):
– PCM 30: HDB3 line code with 2048 kbit/s
– PCM 24: If optical interface mode is disabled
20
EMOD.XFB = 0), or
EMOD.XFB = 1).
the selected line code with 1544 kbit/s depends
on programming bit MODE.CODE (B8ZS or
AMI with B7 stuffing). After enabling optical
interface mode via bit MODE.OPT port XDOP
will be switched to output single rail unipolar
data with 100 % duty cycle.
PEB 2035