DS2155L+ Maxim Integrated Products, DS2155L+ Datasheet - Page 67

• 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

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0/Receive Align Frame Event (RAF) (E1 Only). Set every 250µs at the beginning of align frames. Used to
alert the host that Si and Sa bits are available in the RAF and RNAF registers.
Bit 1/Receive CRC4 Multiframe Event (RCMF) (E1 Only). Set on CRC4 multiframe boundaries; continues to
set every 2ms on an arbitrary boundary if CRC4 is disabled.
Bit 2/Receive Multiframe Event (RMF)
Bit 3/Transmit Align Frame Event (TAF) (E1 Only). Set every 250µs at the beginning of align frames. Used to
alert the host that the TAF and TNAF registers need to be updated.
Bit 4/Transmit Multiframe Event (TMF)
Bit 5/Receive Signaling All-Zeros Event (RSAZ) (E1 Only). Set when over a full MF, time slot 16 contains
all 0s.
Bit 6/Receive Signaling All-Ones Event (RSAO) (E1 Only). Set when the contents of time slot 16 contains fewer
than three 0s over 16 consecutive frames. This alarm is not disabled in the CCS signaling mode.
Bit 7/Receive AIS-CI Event (RAIS-CI) (T1 Only). Set when the receiver detects the AIS-CI pattern as defined in
ANSI T1.403.
E1 Mode: Set every 2ms (regardless if CAS signaling is enabled or not) on receive multiframe boundaries.
Used to alert the host that signaling data is available.
T1 Mode: Set every 1.5ms on D4 MF boundaries or every 3ms on ESF MF boundaries.
E1 Mode: Set every 2ms (regardless if CRC4 is enabled) on transmit multiframe boundaries. Used to alert
the host that signaling data needs to be updated.
T1 Mode: Set every 1.5ms on D4 MF boundaries or every 3ms on ESF MF boundaries.
RAIS-CI
7
0
RSAO
SR4
Status Register 4
1Ch
6
0
RSAZ
5
0
TMF
4
0
67 of 238
TAF
3
0
RMF
2
0
RCMF
1
0
RAF
0
0