CX28344 Conexant, CX28344 Datasheet - Page 83

• Manufacturer Part Number: CX28344
• Description: (CX2834x) Dual / Triple / Quad / Hex / Octal - Enhanced DS3 / E3 Framer
• Manufacturer: Conexant

CX28342/3/4/6/8 Data Sheet
Figure 2-15. Receiver System Side Outputs [RXGAPCK]
28348-DSH-001-B
b)
a)
c)
1.
2.
3.
4.
Figure 2-15
a general data stream that represents seven bits (bits 1, 3, 5, and 7: payload [P]; bit 2:
C
bit 4 is the first bit of next frame).
NOTE:
j
overhead [C]; bits 4 and 6: non-C
P
a.
b.
c.
Internally-used receiver clock (RXCKI or LINECK).
RXDAT, data output.
RXGAPCK, in three of the five modes (ungapped, overhead gapped, non-C
gapped), each available at either rising or falling edge polarity (only showed
for ungapped, but valid for all five modes).
C
P
illustrates the ideal behavior of system-side outputs, in several modes, for
Mindspeed Technologies™
Justification control and Stuff Opportunity bits are viewed as Overhead bits.
O
P
O
P
Internally-used Rx clock,
nominal (RXCKI or LINECK)
RXDAT, data output
RXGAPCK, ungapped mode,
Rising edge polarity (non-inverted)
RXGAPCK, ungapped mode,
falling edge polarity (inverted)
RXGAPCK, overhead gapped mode
RXGAPCK, non-C
j
overhead [O]; bit 3 is the last bit of one frame,
j
gapped mode
Functional Description
2
-
j
37