ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 27

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

TCR1: TRANSMIT CONTROL REGISTER 1 (Address=12 Hex)
NOTE:
See Figure 16–15 for more details about how the Transmit Control Registers affect the operation of the
DS21FT40.
(MSB)
SYMBOLS
ODF
SYMBOLS
RBCS
RESE
TUA1
TFPT
TSA1
T16S
TSIO
TSM
ODF
TSiS
–
TFPT
POSITION
POSITION
RCR2.2
RCR2.1
RCR2.0
TCR1.7
TCR1.6
TCR1.5
TCR1.4
TCR1.3
TCR1.2
TCR1.0
CR1.1
T16S
NAME AND DESCRIPTION
Receive Side Backplane Clock Select.
Not Assigned. Should be set to zero when written.
0 = if RSYSCLK is 1.544 MHz
1 = if RSYSCLK is 2.048 MHz
Receive Side Elastic Store Enable.
0 = elastic store is bypassed
1 = elastic store is enabled
NAME AND DESCRIPTION
Output Data Format.
0 = bipolar data at TPOS and TNEG
1 = NRZ data at TPOS; TNEG=0
Transmit Timeslot 0 Pass Through.
0 = FAS bits/Sa bits/Remote Alarm sourced internally from
the TAF and TNAF registers
1 = FAS bits/Sa bits/Remote Alarm sourced from TSER
Transmit Timeslot 16 Data Select.
0 = sample timeslot 16 at TSER pin
1 = source timeslot 16 from TS0 to TS15 registers
Transmit Unframed All Ones.
0 = transmit data normally
1 = transmit an unframed all one’s code at TPOS and TNEG
Transmit International Bit Select.
0 = sample Si bits at TSER pin
1 = source Si bits from TAF and TNAF registers (in this
mode, TCR1.6 must be set to 0)
Transmit Signaling All Ones.
0 = normal operation
1 = force timeslot 16 in every frame to all ones
TSYNC Mode Select.
0 = frame mode (see the timing in Section 16)
1 = CAS and CRC4 multiframe mode (see the timing in
Section 16)
TSYNC I/O Select.
0 = TSYNC is an input
1 = TSYNC is an output
TUA1
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TSiS
TSA1
TSM
(LSB)
TSIO
DS21FT40