ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 62

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

THFR: TRANSMIT HDLC FIFO REGISTER (Address=B7 Hex)
RDC1: RECEIVE HDLC DS0 CONTROL REGISTER 1 (Address=B8 Hex)
HDLC7
(MSB)
(MSB)
SYMBOLS
RHS
SYMBOLS
RDS0M
HDLC7
HDLC6
HDLC5
HDLC4
HDLC3
HDLC2
HDLC1
HDLC0
RSaDS
RHS
RD4
RD3
RD2
RD1
RD0
HDLC6
RSaDS
POSITION
POSITION
THFR.7
THFR.6
THFR.5
THFR.4
THFR.3
THFR.2
THFR.1
THFR.0
RDC1.7
RDC1.6
RDC1.5
RDC1.4
RDC1.3
RDC1.2
RDC1.1
RDC1.0
RDS0M
HDLC5
NAME AND DESCRIPTION
NAME AND DESCRIPTION
Receive HDLC source
DS0 Selection Mode.
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.
0 = Sa bits defined by RCR2.3 to RCR2.7.
1 = Sa bits or DS0 channels defined by RDC1 (see bits defined
below).
Receive Sa Bit / DS0 Select.
0 = route Sa bits to the HDLC controller. RD0 to RD4 defines
which Sa bits are to be routed. RD4 corresponds to Sa4, RD3
to Sa5, RD2 to Sa6, RD1 to Sa7 and RD0 to Sa8.
1 = route DS0 channels into the HDLC controller. RDC1.5 is
used to determine how the DS0 channels are selected.
0 = utilize the RD0 to RD4 bits to select which single DS0
channel to use.
1 = utilize the RCHBLK control registers to select which DS0
channels to use. This option is not applicable for the
DS21FT40.
DS0 Channel Select Bit 4. MSB of the DS0 channel select.
DS0 Channel Select Bit 3.
DS0 Channel Select Bit 2.
DS0 Channel Select Bit 1.
DS0 Channel Select Bit 0. LSB of the DS0 channel select.
HDLC4
RD4
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HDLC3
RD3
HDLC2
RD2
HDLC1
RD1
HDLC0
(LSB)
(LSB)
DS21FT40
RD0