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MT9074 Datasheet(PDF) 94 Page - Zarlink Semiconductor Inc |
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MT9074 Datasheet(HTML) 94 Page - Zarlink Semiconductor Inc |
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94 / 151 page  MT9074 Data Sheet 94 Zarlink Semiconductor Inc. 0TIU0 Transmit International Use Zero. When CRC-4 operation is disabled (CSYN=1), this bit is transmit on the PCM30 2048 kbit/sec. link in bit position one of time-slot zero of frame-alignment frames. It is reserved for international use and should normally be kept at one. If CRC processing is used, i.e., CSYN =0, this bit is ignored. Bit Name Functional Description 7-4 TMA1-4 Transmit Multiframe Alignment Bits One to Four. These bits are transmitted on the PCM30 2048 kbit/sec. link in bit positions one to four of time slot 16 of frame zero of every signaling multiframe. These bits are used by the far end to identify specific frames of a signaling multiframe. TMA1-4 = 0000 for normal operation. 3 X1 This bit is transmitted on the PCM30 2048 kbit/sec. link in bit position five of time slot 16 of frame zero of every multiframe. X1 is normally set to one. 2 Y This bit is transmitted on the PCM30 2048 kbit/sec. link in bit position six of time slot 16 of frame zero of every multiframe. It is used to indicate the loss of multiframe alignment to the remote end of the link. If one - loss of multiframe alignment; if zero - multiframe alignment acquired. This bit is ignored when AUTY is zero (page 01H, address 10H). 1- 0 X2, X3 These bits are transmitted on the PCM30 2048 kbit/sec. link in bit positions seven and eight respectively, of time slot 16 of frame zero of every multiframe. X2 and X3 are normally set to one. If receive channel 16 data is to be included in the looped data then the control bit TxCCS (Page, Address 14H, bit 5) must be set high, otherwise transmit signaling data, or HOLCC data will be placed into the outgoing channel 16 timeslot. Table 82 - Transmit Multiframe Alignment Signal (E1) (Page 1, Address 13H) Bit Name Functional Description 7 DSToEn DSTo Enable. If zero pin DSTo is tristate. If set, the pin DSTo is enabled. 6 CSToEn CSTo Enable. If zero pin CSTo is tristate. If set, the pin CSTo is enabled. 5 TxCCS Transmit Common Channel Signaling. If one, the transmit section of the device is in common channel signaling (CCS) mode. If zero, it is in Channel Associated Signaling (CAS) mode. 4 DBNCE, Debounce Select. This bit selects the debounce period (1 for 14 msec.; 0 for no debounce). Note: there may be as much as 2 msec. added to this duration because the state change of the signaling equipment is not synchronous with the PCM30 signaling multiframe. Table 83 - Interrupt and Signaling Control Word (E1) (Page 1, Address 14H) Bit Name Functional Description Table 81 - HDLC Selection Word (E1) (Page 1, Address 12H) |
Similar Part No. - MT9074 |
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Similar Description - MT9074 |
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