DS2141AQ+ Maxim Integrated Products, DS2141AQ+ Datasheet - Page 11

• 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

CCR1: COMMON CONTROL REGISTER 1 (37h)
PAYLOAD LOOPBACK
When CCR1.1 is set to a 1, the DS2141A will be forced into Payload LoopBack (PLB). Normally, this
loopback is only enabled when ESF framing is being performed. In a PLB situation, the DS2141A will
loop the 192 bits of payload data (with BPVs corrected) from the receive section back to the transmit
section. The FPS framing pattern, CRC6 calculation, and the FDL bits are not looped back, they are
reinserted by the DS2141A. When PLB is enabled, the following will occur:
1. Data will be transmitted from the TPOS and TNEG pins synchronous with RCLK instead of TCLK.
2. All of the receive side signals will continue to operate normally.
3. The TCHCLK and TCHBLK signals are forced low.
4. Data at the TSER pin is ignored.
5. The TLCLK signal will become synchronous with RCLK instead of TCLK.
(MSB)
TESE
SYMBOL
SCLKM
RSAO
RESE
TESE
P34F
PLB
LLB
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P34F
POSITION
CCR1.7
CCR1.6
CCR1.5
CCR1.4
CCR1.3
CCR1.2
CCR1.1
CCR1.0
RSAO
NAME AND DESCRIPTION
Transmit Elastic Store Enable.
0=elastic store is bypassed.
1=elastic store is enabled.
Function of Pin 34.
0=Receive Loss of Sync (RLOS).
1=Loss of Transmit Clock (LOTC).
Receive Signaling All 1's.
0=allow robbed signaling bits to appear at RSER.
1=force all robbed signaling bits at RSER to 1.
Not Assigned. Should be set to 0 when written to.
SYSCLK Mode Select.
0=if SYSCLK is 1.544 MHz.
1=if SYSCLK is 2.048 MHz.
Receive Elastic Store Enable.
0=elastic store is bypassed.
1=elastic store is enabled.
Payload Loopback.
0=loopback disabled.
1=loopback enabled.
Local Loopback.
0=loopback disabled.
1=loopback enabled.
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SCLKM
RESE
PLB
(LSB)
LLB
DS2141A