CX28344 Conexant, CX28344 Datasheet - Page 52

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

Functional Description
Figure 2-4. DS3 System Side Transmission when TXSY is Externally Provided
Figure 2-5. DS3 System Side Transmission Unit when TXSY is Used as an Overhead Indication Bit
2-6
TXGAPCK(inv)
TXGAPCK(inv)
TXGAPCK
TXGAPCK
TXDATI
TXDATI
TXCKI
TXCKI
TXSY
TXSY
Subframe 6
Subframe 6
84 Payload bits
84 Payload bits
Figure 2-5
setting, TXSY is low during all Overhead bits position and high during all data bits
position.
Figure 2-6
input signal. The signal is sampled on the falling edge of TXCKI clock. The framer
also expects the TXSY signal to be low during the last bit of the frame before
becoming high during the first of the next frame.
illustrates TXSY used as an overhead indication output signal. In this
illustrates the TXSY signal configured as a frame start synchronization
Mindspeed Technologies™
M3
M3
The full behavior is not
679 bits of Subframe 7 including its
The full behavior is not
The full behavior is not
679 bits of Subframe 7 including its
shown for this section
shown for this section
shown for this section
Low during rest of Subframe 7
Subframe 7
Subframe 7
overhead bits
overhead bits
X1
X1
Subframe 1
Subframe 1
84 Payload bits
84 Payload bits
CX28342/3/4/6/8 Data Sheet
28348-DSH-001-B
100542_007
100542_008