DS21354LC1+ Maxim Integrated Products, DS21354LC1+ Datasheet - Page 98
DS21354LC1+
Manufacturer Part Number
DS21354LC1+
Description
IC TXRX E1 3.3V 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2154LNA2.pdf
(124 pages)
Specifications of DS21354LC1+
Function
Single-Chip Transceiver
Interface
E1, HDLC
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
Remote and AIS Alarm Detector / Generator
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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17.
In many architectures, the outputs of individual framers are combined into higher speed serial buses to
simplify transport across the system. The DS21354/DS21554 can be configured to allow data and
signaling buses to be multiplexed into higher speed data and signaling buses eliminating external
hardware saving board space and cost.
The interleaved PCM bus option (IBO) supports two bus speeds. The 4.096 MHz bus speed allows two
SCTs to share a common bus. The 8.192MHz bus speed allows four SCTs to share a common bus. See
Figure 17-1
a common bus must be configured through software and requires the use of one or two device pins. The
elastic stores of each SCT must be enabled and configured for 2.048MHz operation. See
Table
For all bus configurations, one SCT will be configured as the master device and the remaining SCTs will
be configured as slave devices. In the 4.096MHz bus configuration there is one master and one slave. In
the 8.192MHz bus configuration there is one master and three slaves. Refer to the IBO register
description for more detail.
IBO: INTERLEAVE BUS OPERATION REGISTER (Address = B5 Hex)
Table 17-1. IBO Master Device Select
SYMBOL
(MSB)
INTSEL
MSEL0
MSEL1
IBOEN
MSEL1
—
—
—
—
—
17-1.
0
0
1
1
INTERLEAVED PCM BUS OPERATION
for an example of four devices sharing a common 8.192MHz PCM bus. Each SCT that shares
POSITION
—
IBO.6
IBO.6
IBO.5
IBO.4
IBO.3
IBO.2
IBO.1
IBO.0
MSEL0
0
1
0
1
Not Assigned. Should be set to 0.
Not Assigned. Should be set to 0.
Not Assigned. Should be set to 0.
Not Assigned. Should be set to 0.
Interleave Bus Operation Enable
0 = Interleave Bus Operation disabled.
1 = Interleave Bus Operation enabled.
Interleave Type Select
0 = Byte interleave.
1 = Frame interleave.
Master Device Bus Select Bit 0. See
Master Device Bus Select Bit 1. See
—
Slave device.
Master device with 1 slave device (4.096MHz bus rate)
Master device with 3 slave devices (8.192MHz bus rate)
Reserved
—
98 of 124
NAME AND DESCRIPTION
IBOEN
FUNCTION
INTSEL
Table
Table 17-1.
17-1.
MSEL0
Figure 17-1
MSEL1
(LSB)
and
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