DS2155L+ Maxim Integrated Products, DS2155L+ Datasheet - Page 212

• Manufacturer Part Number: DS2155L+
• Description: IC TXRX T1/E1/J1 1-CHIP 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS2155L+

• 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: 0°C ~ 70°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: + 70 C
• Minimum Operating Temperature: 0 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 35-9. Transmit-Side 1.544MHz Boundary Timing (Elastic Store
Enabled)
Note 1: TCHBLK is programmed to block channel 24 (if the TPCSI bit is set, then the signaling data at TSIG is ignored during channel 24).
Figure 35-10. Transmit-Side 2.048MHz Boundary Timing (Elastic Store
Enabled)
Note 1: TSER data in channels 1, 5, 9, 13, 17, 21, 25, and 29 is ignored.
Note 2: TCHBLK is programmed to block channel 31 (if the TPCSI bit is set, then the signaling data at TSIG will be ignored).
Note 3: TCHBLK is forced to 1 in the same channels as TSER is ignored (see Note 1).
Note 4: The F-bit position for the T1 frame is sampled and passed through the transmit-side elastic store into the MSB bit position of channel 1.
TCHBLK
(Normally, the transmit-side formatter overwrites the F-bit position unless the formatter is programmed to pass through the F-bit
position.)
TSYSCLK
TSYSCLK
TCHBLK
TCHCLK
TSSYNC
TCHCLK
TSSYNC
TSER
TSER
TSIG
TSIG
2,3
1
1
CHANNEL 23
CHANNEL 31
CHANNEL 31
CHANNEL 23
A
A
B
B
C/A D/B
C/A D/B
LSB MSB
LSB MSB
212 of 238
CHANNEL 24
CHANNEL 24
CHANNEL 32
CHANNEL 32
A
A
B
B
C/A D/B
C/A D/B
LSB
LSB
F
F MSB
4
CHANNEL 1
CHANNEL 1
CHANNEL 1
CHANNEL 1
A
A