Preliminary Information
MT9076
Bit
Name
Functional Description
7
6
- - -
Unused
MFSEL Multiframe Select. This bit determines which receive multiframe signal (CRC-4 or signaling)
the RxMF (pin 42 in PLCC, 23 in MQFP) signal is aligned with. If zero, RxMF is aligned with
the receive signaling multiframe. If one, RxMF is aligned with the receive CRC-4 multiframe.
5
NBTB
National Bit Transmit Buffer. If one, the transmit NFAS signal originates from the transmit
national bit buffer page 0EH; if zero, the transmit NFAS signal originates from the TNU4-8 bits
of page 1 address 16H.
4-0
Sa4-Sa8 National Bit Data Link Select A one selects the corresponding Sa bits of the NFA signal for
4, 8, 12, 16 or 20 kbits/sec. data link channel. Data link (DL) selection will function in
termination mode only; in transmit transparent mode Sa4 is automatically selected - see
TxTRSP control bit of page 01H, address 11H. If zero, the corresponding bits of transmit non-
frame alignment signal are programmed by the Non-Frame Alignment Control Word (page
01H, address 12H).
Table 94 - Multiframe and Data Link Selection (E1)
(Page 1, Address 17H)
Bit
Name
Functional Description
7-0
TxM7-0 Transmit Message Bits 7 - 0. The contents of this register are transmit into those outgoing
DS1 channels selected by the Per Time Slot Control registers.
Table 95 - Transmit Message Word (E1)
(Page 1, Address 18H)
97
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