DS2141AQ+ Maxim Integrated Products, DS2141AQ+ Datasheet - Page 12

• Manufacturer Part Number: DS2141AQ+
• Description: IC CONTROLLER T1 5V 44-PLCC
• Manufacturer: Maxim Integrated Products

Specifications of DS2141AQ+

• Controller Type: T1 Controller
• Interface: Parallel/Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 10mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-LCC, 44-PLCC
• Operating Supply Voltage: 5 V
• Supply Current (max): 10 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LOCAL LOOPBACK
When CCR1.0 is set to a 1, the DS2141A will enter a Local LoopBack (LLB) mode. This loopback is
useful in testing and debugging applications. In LLB, the DS2141A will loop data from the transmit side
back to the receive side. This loopback is synonymous with replacing the RCLK input with the TCLK
signal, and the RPOS/RNEG inputs with the TPOS/TNEG outputs. When LLB is enabled, the following
will occur:
1. The TPOS and TNEG pins will transmit an unframed all 1's.
2. Data at RPOS and RNEG will be ignored.
3. All receive side signals will take on timing synchronous with TCLK instead of RCLK.
CCR1: COMMON CONTROL REGISTER 2 (38h)
(MSB)
TFM
SYMBOL
TSLC96
RSLC96
TB8ZS
RB8ZS
RFDL
TFDL
RFM
TFM
TB8ZS
POSITION
CCR2.7
CCR2.6
CCR2.5
CCR2.4
CCR2.3
CCR2.2
CCR2.1
CCR2.0
TSLC96
NAME AND DESCRIPTION
Transmit Frame Mode Select.
0=D4 framing mode.
1=ESF framing mode.
Transmit B8ZS Enable.
0=B8ZS disabled.
1=B8ZS enabled.
Transmit SLC-96/Fs Bit Insertion Enable.
0=SLC-96 disabled.
1=SLC-96 enabled.
Transmit Zero Stuffer Enable.
0=zero stuffer disabled.
1=zero stuffer enabled.
Receive Frame Mode Select.
0=D4 framing mode.
1=ESF framing mode.
Receive B8ZS Enable.
0=B8ZS disabled.
1=B8ZS enabled.
Receive SLC-96 Enable.
0=SLC-96 disabled.
1=SLC-96 enabled.
Receive Zero Destuffer Enable.
0=zero destuffer disabled.
1=zero destuffer enabled.
TFDL
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RFM
RB8ZS
RSLC96
(LSB)
RFDL
DS2141A