DS3174+ Maxim Integrated Products, DS3174+ Datasheet - Page 102
DS3174+
Manufacturer Part Number
DS3174+
Description
IC TXRX DS3/E3 QUAD 400-BGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3171N.pdf
(234 pages)
Specifications of DS3174+
Function
Single-Chip Transceiver
Interface
DS3, E3
Number Of Circuits
4
Voltage - Supply
3.135 V ~ 3.465 V
Current - Supply
725mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
400-BGA
Includes
DS3 Framers, E3 Framers, HDLC Controller, On-Chip BERTs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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the memory and maintaining the memory read and write pointers. The Receive Data Storage accepts data and
data status from the Receive Trace ID Processor, stores the data in memory, and maintains data status
information. The data is read from the Receive Data Storage via the microprocessor interface. The Receive Data
Storage contains the current trail trace identifier, the receive trail trace identifier, and the expected trail trace
identifier.
10.9 FEAC Controller
10.9.1 General Description
The FEAC Controller demaps FEAC codewords from a DS3/E3 data stream in the receive direction and maps
FEAC codewords into a DS3/E3 data stream in the transmit direction. The transmit direction demaps FEAC
codewords from a DS3/E3 data stream.
The receive direction performs FEAC processing, and stores the codewords in the FIFO using line timing. It
removes the codewords from the FIFO and outputs them to the microprocessor via the register interface.
The transmit direction inputs codewords from the microprocessor via the register interface and stores the
codewords. It removes the codewords and performs FEAC processing. See
FEAC Controller in the block diagram
Figure 10-23. FEAC Controller Block Diagram
10.9.2 Features
•
•
•
•
10.9.3 Functional Description
The bits in a code are received MSB first, LSB last. When they are output serially, they are output MSB first, LSB
last. The bits in a code in an incoming signal are numbered in the order they are received, 1 (MSB) to 6 (LSB).
However, when a code is stored in a register, the MSB is stored in the lowest numbered bit (0), and the LSB is
Clock Rate
Programmable dual codeword output – The transmit side can be programmed to output a single codeword
ten times, one codeword ten times followed by a second codeword ten times, or a single codeword
continuously.
Four codeword receive FIFO
Fully independent transmit and receive paths
Fully independent Line side and register side timing – The FIFO can be read from or written to at the
register interface side while all line side clocks and signals are inactive, and read from or written to at the line
side while all register interface side clocks and signals are inactive.
Receive
Transmit
DS3/E3
DS3/E3
Adapter
LIU
LIU
Encoder
Decoder
B3ZS/
HDB3
HDB3
B3ZS/
TUA1
TAIS
IEEE P1149.1
Access Port
JTAG Test
FEAC
DS3 / E3
DS3 / E3
Receive
Framer
Transmit
Formatter
Buffer
Trace
Trail
HDLC
GEN
UA1
102
RX BERT
TX BERT
Figure 10-23
Microprocessor
Interface
for the location of the
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