DS21354LN+ Maxim Integrated Products, DS21354LN+ Datasheet - Page 76
![IC TXRX E1 1-CHIP 3.3V 100-LQFP](/photos/6/82/68291/406-100-lqfp_sml.jpg)
DS21354LN+
Manufacturer Part Number
DS21354LN+
Description
IC TXRX E1 1-CHIP 3.3V 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2154LNA2.pdf
(124 pages)
Specifications of DS21354LN+
Function
Single-Chip Transceiver
Interface
E1, HDLC
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
Remote and AIS Alarm Detector / Generator
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
- Current page: 76 of 124
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RHIR: RECEIVE HDLC INFORMATION REGISTER (Address = B3 Hex)
Note: The RABT, RCRCE, ROVR, and RVM bits are latched and are cleared when read.
RHFR: RECEIVE HDLC FIFO REGISTER (Address = B4 Hex)
SYMBOL
SYMBOL
(MSB)
RABT
REMPTY
HDLC7
(MSB)
RCRCE
OBYTE
CBYTE
HDLC7
HDLC6
HDLC5
HDLC4
HDLC3
HDLC2
HDLC1
HDLC0
ROVR
RABT
RVM
POK
RCRCE
HDLC6
POSITION
POSITION
RHFR.7
RHFR.6
RHFR.5
RHFR.4
RHFR.3
RHFR.2
RHFR.1
RHFR.0
RHIR.7
RHIR.6
RHIR.5
RHIR.4
RHIR.3
RHIR.2
RHIR.1
RHIR.0
ROVR
HDLC5
Abort Sequence Detected. Set whenever the HDLC controller sees 7 or
more ones in a row.
CRC Error. Set when the CRC checksum is in error.
Overrun. Set when the HDLC controller has attempted to write a byte
into an already full receive FIFO.
Valid Message. Set when the HDLC controller has detected and checked
a complete HDLC packet.
Empty. A real-time bit that is set high when the receive FIFO is empty.
Packet OK. Set when the byte available for reading in the receive FIFO at
RHFR is the last byte of a valid message (and hence no abort was seen, no
overrun occurred, and the CRC was correct).
Closing Byte. Set when the byte available for reading in the receive FIFO
at RHFR is the last byte of a message (whether the message was valid or
not).
Opening Byte. Set when the byte available for reading in the receive
FIFO at RHFR is the first byte of a message.
HDLC Data Bit 7. MSB of a HDLC packet data byte.
HDLC Data Bit 6.
HDLC Data Bit 5.
HDLC Data Bit 4.
HDLC Data Bit 3.
HDLC Data Bit 2.
HDLC Data Bit 1.
HDLC Data Bit 0. LSB of a HDLC packet data byte.
RVM
HDLC4
REMPTY
76 of 124
NAME AND DESCRIPTION
NAME AND DESCRIPTION
HDLC3
POK
HDLC2
CBYTE
HDLC1
OBYTE
(LSB)
HDLC0
(LSB)
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