DS3172 Maxim Integrated, DS3172 Datasheet - Page 75

• Manufacturer Part Number: DS3172
• Description: Network Controller & Processor ICs Dual DS3/E3 Single Chip Transceiver
• Manufacturer: Maxim Integrated

Specifications of DS3172

• Part # Aliases: 90-31720-000

Table 10-20
multiplexed pins.
Table 10-20. TSOFIn Input Pin Functions
FM[2:0]
0XX (FSCT)
1XX (FBM)
Table 10-21. TSOFOn/TDENn/Output Pin Functions
FM[2:0]
0XX (FSCT)
0XX (FSCT)
1XX (FBM)
Table 10-22. TCLKOn/TGCLKn Output Pin Functions
FM[2:0]
PORT.CR2
0XX (FSCT)
0XX (FSCT)
1XX (FBM)
10.5.8.2 Receive SCT port pins
The receive SCT pins are RSERn, RSOFOn / RDENn and RCLKOn / RGCLKn. They have different functions
based on the framing mode and other pin mode bits. Unused input pin functions should drive a logic zero into the
device circuits expecting a signal from that pin. The control bits that configure these pins are PORT.CR2.FM[2:0],
PORT.CR3.RPFPE, PORT.CR3.RSOFOS and PORT.CR3.RCLKS.
Table 10-23
multiplexed pins.
Table 10-23. RSOFOn/RDENn Output Pin Functions
FM[2:0]
PORT.CR2
0XX (FSCT)
0XX (FSCT)
1XX (CLR)
1XX (CSCT)
PORT.CR2
PORT.CR2
to
to
Table 10-22
Table 10-24
TCLKS
PORT.CR3
RSOFOS
PORT.CR3
Pin function
TSOFIn
Not used
TSOFOS
PORT.CR3
X
X
X
0
1
0
1
X
0
1
describe the function selected by the FM bits and other pin mode bits for the
describe the function selected by the FM bits and other pin mode bits for the
RSOFOn
Pin function
RDENn
Low
High
Pin function
TGCLKn
TCLKOn
TCLKOn
Pin function
TDENn
TSOFOn
Low
Gap source
TDENn
none
none
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