ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 63

• Manufacturer Part Number: ds21ft40
• Description: Ds21ft40 Four X Three 12 Channel E1 Framer
• Manufacturer: Maxim Integrated Products, Inc.

RDC2: RECEIVE HDLC DS0 CONTROL REGISTER 2 (Address=B9 Hex)
TDC1: TRANSMIT HDLC DS0 CONTROL REGISTER 1 (Address = BA Hex)
(MSB)
RDB8
(MSB)
SYMBOLS
THE
SYMBOLS
TDS0M
TSaDS
RDB8
RDB7
RDB6
RDB5
RDB4
RDB3
RDB2
RDB1
THE
TSaDS
RDB7
POSITION
POSITION
RDC2.7
RDC2.6
RDC2.5
RDC2.4
RDC2.3
RDC2.2
RDC2.1
RDC2.0
TDC1.7
TDC1.6
TDC1.5
TDS0M
RDB6
NAME AND DESCRIPTION
DS0 Bit 1 Suppress Enable. LSB of the DS0. Set to one to
NAME AND DESCRIPTION
DS0 Bit 8 Suppress Enable. MSB of the DS0. Set to one to
stop this bit from being used.
DS0 Bit 7 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 6 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 5 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 4 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 3 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 2 Suppress Enable. Set to one to stop this bit from
being used.
stop this bit from being used.
Transmit HDLC Enable.
0 = disable HDLC controller (no data inserted by HDLC
controller into the transmit data stream)
1 = enable HDLC controller to allow insertion of HDLC data
into either the Sa position or multiple DS0 channels as defined
by TDC1 (see bit definitions below).
Transmit Sa Bit / DS0 Select. This bit is ignored if TDC1.7 is
set to zero.
0 = route Sa bits from the HDLC controller. TD0 to TD4
defines which Sa bits are to be routed. TD4 corresponds to
Sa4, TD3 to Sa5, TD2 to Sa6, TD1 to Sa7 and TD0 to Sa8.
1 = route DS0 channels from the HDLC controller. TDC1.5 is
used to determine how the DS0 channels are selected.
DS0 Selection Mode.
Not applicable for the DS21FT40. Should be cleared to zero.
RDB5
TD4
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RDB4
TD3
RDB3
TD2
RDB2
TD1
RDB1
(LSB)
(LSB)
DS21FT40
TD0