DS2155G Maxim Integrated Products, DS2155G Datasheet - Page 5

• Manufacturer Part Number: DS2155G
• Description: IC TXRX T1/E1/J1 1-CHIP 100CSBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS2155G

• 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-LFBGA
• Includes: BERT Generator and Detector, CMI Coder and Decoder, HDLC Controller
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

13. E1 HDLC CONTROLLERS ARE NOT TESTED BELOW ROOM TEMPERATURE
14. SOFTWARE HDLC RESET FUNCTION
15. HDLC CRC ERROR
16. CSU FILTERS NOT TESTED BELOW ROOM TEMPERATURE
17. 2.048 OUTPUT SIGNAL IN G.703 OPERATION IS STRONGER THAN SPECIFIED
Description:
When operating in E1 mode, the HDLC controllers may not function properly at temperatures below
room temperature.
Work Around:
Avoid operation at temperatures below room temperature if using the HDLC controllers in E1 mode.
Description:
The soft reset function of the HDLC controllers may not issue a reset if the RHR bit is applied for less
than 1µs.
Work Around:
The RHR bit must be applied for at least 1µs to ensure a reset occurs.
Description:
The receive packet-status informa tion register reports a "101" (packet too short) status when the
controller receives a flag message or six consecutive 1’s in the message body, instead of reporting a
CRC error.
Work Around:
There is no known software work around for this issue.
Description:
The functionality of the output CSU filters is not tested below room temperature due to the long start-
up time required for the circuitry.
Work Around:
10s is normally sufficient time for the CSU filters to start and function properly over the specified
temperature range.
Description:
The output waveform in G.703 operation is not attenuated to the correct signal level.
Work Around:
This is a specification issue. Actual performance in a G.703 application is not impaired.
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DS2155 ERRATA SHEET