DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 107
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DS21455
Manufacturer Part Number
DS21455
Description
Network Controller & Processor ICs Quad E1-T1-J1 Single -Chip Transceiver (S
Manufacturer
Maxim Integrated Products
Specifications of DS21455
Product
Framer
Number Of Transceivers
4
Data Rate
64 Kbps
Supply Voltage (max)
3.465 V
Supply Voltage (min)
3.135 V
Supply Current (max)
328 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Package / Case
BGA
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DS21455/DS21458 Quad T1/E1/J1 Transceivers
17.2.4 Hardware-Based Transmit Signaling
In hardware-based mode, signaling data is input via the TSIG pin. This signaling PCM stream is buffered
and inserted to the data stream being input at the TSER pin.
Signaling data can be input on a per-channel basis via the transmit-hardware signaling-channel select
(THSCS) function. The framer can be set up to take the signaling data presented at the TSIG pin and
insert the signaling data into the PCM data stream that is being input at the TSER pin. The user has the
ability to control what channels are to have signaling data from the TSIG pin inserted into them on a per-
channel basis. See the Special Per-Channel Operation section. The signaling insertion capabilities of the
framer are available whether the transmit-side elastic store is enabled or disabled. If the elastic store is
enabled, the backplane clock (TSYSCLK) can be either 1.544MHz or 2.048MHz.
107 of 270
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