DS3172N Maxim Integrated, DS3172N Datasheet - Page 23

• Manufacturer Part Number: DS3172N
• Description: Network Controller & Processor ICs Dual DS3/E3 Single Chip Transceiver
• Manufacturer: Maxim Integrated

Specifications of DS3172N

• Part # Aliases: 90-31720-N00

7.2 HDB3/B3ZS/AMI Non-LIU Line Interface Mode
The Non-LIU Line Interface Mode disables the LIU and a digital representation of AMI is output/input on the
TPOSn/TNEGn signals and the RPOSn/RNEGn signals. Selection between AMI and HDB3/B3ZS is made via the
LINE.TCR Register. HDB3 and B3ZS selection is controlled by the configuration selected by the FM bits. The DS3
modes select the B3ZS line code while the E3 modes select the HDB3 line code.
Table 7-2. HDB3/B3ZS/AMI Non-LIU Mode Configuration Registers
MODE
LIU Off, B3ZS or HDB3
LIU Off, AMI
Figure 7-2. HDB3/B3ZS/AMI Non-LIU Line Interface Mode
TLCLKn
RLCLKn
TPOSn
TNEGn
RNEGn
RPOSn
Clock Rate
Adapter
LM[2:0]
000
000
Decoder
Encoder
HDB3
B3ZS/
B3ZS/
HDB3
LINE.TCR.TZSD &
LINE.RCR.RZSD
TUA1
TAIS
0
1
FROM FRAMING LOGIC
OR EXTERNAL PINS
23
TO FRAMING LOGIC
OR EXTERNAL PINS
TLEN
PORT.CR2
1
1
n = port # (1-4)