DS2155LN+ Maxim Integrated Products, DS2155LN+ Datasheet - Page 214

• Manufacturer Part Number: DS2155LN+
• Description: IC TXRX T1/E1/J1 1-CHIP 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS2155LN+

• Function: Single-Chip Transceiver
• Interface: E1, HDLC, J1, T1
• Number Of Circuits: 1
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Includes: BERT Generator and Detector, CMI Coder and Decoder, HDLC Controller
• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 64 Kbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 75 mA (Typ)
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 35-13. Receive-Side Boundary Timing, RSYSCLK = 1.544MHz (Elastic
Store Enabled)
Note 1: Data from the E1 channels 1, 5, 9, 13, 17, 21, 25, and 29 is dropped (channel 2 from the E1 link is mapped to channel 1 of the T1 link,
Note 2: RSYNC in the output mode (IOCR1.4 = 0).
Note 3: RSYNC in the input mode (IOCR1.4 = 1).
Note 4: RCHBLK is programmed to block channel 24.
Figure 35-14. Receive-Side Boundary Timing, RSYSCLK = 2.048MHz (Elastic
Store Enabled)
Note 1: RSYNC is in the output mode (IOCR1.4 = 0).
Note 2 : RSYNC is in the input mode (IOCR1.4 = 1).
Note 3: RCHBLK is programmed to block channel 1.
Note 4: RSIG normally contains the CAS multiframe alignment nibble (0000) in channel 1.
etc.) and the F-bit position is added (forced to on 1).
RCHBLK
RSYSCLK
RSYSCLK
RCHBLK
RMSYNC
RCHCLK
RMSYNC
RSYNC
RSYNC
RCHCLK
RSYNC
RSYNC
RSER
RSER
RSIG
3
1
2
4
2
1
3
CHANNEL 23/31
CHANNEL 31
A
CHANNEL 31
B
LSB
C
MSB
LSB MSB
D
214 of 238
CHANNEL 24/32
CHANNEL 32
A
CHANNEL 32
B
LSB
C
F
LSB MSB
D
MSB
CHANNEL 1/2
CHANNEL 1
CHANNEL 1
Note 4