DS21FT44 Datasheet, PDF (40/110 Pages) Dallas Semiconductor – 4x3 Twelve Channel E1 Framer, 4x4 Sixteen Channel E1 Framer

SYMBOL
POSITION NAME AND DESCRIPTION
DS21FT44/DS21FF44
TESALGN
RCM4
RCM3
RCM2
RCM1
RCM0
CCR5.5
CCR5.4
CCR5.3
CCR5.2
CCR5.1
CCR5.0
Must be cleared and set again for a subsequent align. See
Section 17 for details.
Transmit Elastic Store Align. Setting this bit from a zero to
a one may force the transmit elastic store’s write/read pointers
to a minimum separation of half a frame. No action will be
taken if the pointer separation is already greater or equal to
half a frame. If pointer separation is less then half a frame, the
command will be executed and data will be disrupted. Should
be toggled after TSYSCLK has been applied and is stable.
Must be cleared and set again for a subsequent align. See
Section 17 for details.
Receive Channel Monitor Bit 4. MSB of a channel decode
that determines which receive channel data will appear in the
RDS0M register. See Section 13 for details.
Receive Channel Monitor Bit 3.
Receive Channel Monitor Bit 2.
Receive Channel Monitor Bit 1.
Receive Channel Monitor Bit 0. LSB of the channel decode.
CCR6: COMMON CONTROL REGISTER 6 (Address=1D Hex)
(MSB)
–
–
–
–
–
TCLKSRC RESR
(LSB)
TESR
SYMBOL
POSITION NAME AND DESCRIPTION
–
–
–
–
–
TCLKSRC
RESR
TESR
CCR6.7
CCR6.6
CCR6.5
CCR6.4
CCR6.3
CCR6.2
CCR6.1
CCR6.0
Not Assigned. Should be set to zero when written
Not Assigned. Should be set to zero when written
Not Assigned. Should be set to zero when written
Not Assigned. Should be set to zero when written
Not Assigned. Should be set to zero when written
Transmit Clock Source Select. This function allows the user
to internally select RCLK as the clock source for the transmit
side formatter.
0 = Transmit side formatter clocked with signal applied at
TCLK pin. LOTC Mux function is operational (TCR1.7)
1 = Transmit side formatter clocked with RCLK.
Receive Elastic Store Reset. Setting this bit from a zero to a
one will force the receive elastic store to a depth of one frame.
Receive data is lost during the reset. Should be toggled after
RSYSCLK has been applied and is stable. Do not leave this
bit set high.
Transmit Elastic Store Reset. Setting this bit from a zero to
a one will force the transmit elastic store to a depth of one
frame. Transmit data is lost during the reset. Should be
toggled after TSYSCLK has been applied and is stable. Do
not leave this bit set high.
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