
____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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11.5.2 Transmit Formatter Registers
Table 11-21 lists the transmit formatter registers. Some of these registers change function depending on whether
E1 mode or T1/J1 mode is specified in the
TMMR register. These dual-function registers are shown below using
two lines of text, one for E1 and one for T1/J1. All addresses not listed in the table are reserved and should be
initialized with a value of 0x00 for proper operation. The base address for the port n formatter is
0x100,400+0x800*(n-1) (where n=1-8 for DS34T108, n=1-4 for DS34T104, n=1-2 for DS34T102, n=1 for
DS34T101). The formatter block was originally designed for an 8-bit data bus. In this device, each 8-bit register is
mapped to the least significant byte of the dword.
Table 11-21. Transmit Formatter Registers
Addr
Offset
Register Name
Description
Read/Write or
Read Only
Page
400
Tx Digital MilliWatt Enable Register 1
R/W
404
Tx Digital MilliWatt Enable Register 2
R/W
408
Tx Digital MilliWatt Enable Register 3
R/W
40C
Tx Digital MilliWatt Enable Register 4
R/W
410
Tx Jammed Bit Eight Stuffing Register 1
R/W
414
Tx Jammed Bit Eight Stuffing Register 2
R/W
418
Tx Jammed Bit Eight Stuffing Register 3
R/W
41C
Tx Jammed Bit Eight Stuffing Register 4
R/W
420
Tx DDS Zero Code Register 1 (T1 Mode Only)
R/W
424
Tx DDS Zero Code Register 2 (T1 Mode Only)
R/W
428
Tx DDS Zero Code Register 3 (T1 Mode Only)
R/W
440
Tx HDLC Control Register 1
R/W
444
Tx HDLC Bit Suppress Register
R/W
44C
Tx HDLC Control Register 2
R/W
450
Tx Sa Bit Control Register (E1 Mode Only)
R/W
460
Tx Software Signaling Insertion Enable 1
R/W
464
Tx Software Signaling Insertion Enable 2
R/W
468
Tx Software Signaling Insertion Enable 3
R/W
46C
Tx Software Signaling Insertion Enable 4 (E1 Only)
R/W
480
4
R/W
f484
4
R/W
488
4
R/W
48C
4
R/W
490
4
R/W
494
4
R/W
498
4
R/W
49C
4
R/W
4A0
4
R/W
4A4
4
R/W
4A8
4
R/W
4AC
4
R/W
4B0
4
R/W
4B4
4
R/W
4B8
4
R/W
4BC
4
R/W
4C0
4
R/W
4C4
4
R/W
4C8
4
R/W
4CC
4
R/W
4D0
4
R/W
4D4
4
R/W
4D8
4
R/W
4DC
4
R/W
4E0
4
Tx Idle Definition Register 25 (E1 Mode Only)
R/W
4E4
4
R/W