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MT9074AP Datasheet(PDF) 48 Page - Mitel Networks Corporation |
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MT9074AP Datasheet(HTML) 48 Page - Mitel Networks Corporation |
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48 / 122 page  MT9074 Advance Information 48 2 EXTOSC External Oscillator Select. Setting this bit connects the pin OSC1 to a TTL compatible input. This allows for a system design employing a TTL output oscillator as a 20.000 Mhz reference clock. 1 RSV Reserved. Set to zero for normal operation. 0 RSV Reserved. Set to zero for normal operation. Bit Name Functional Description 7 TFSYNIM Terminal Frame Synchronization Interrupt Mask. When unmasked an interrupt is initiated whenever a change of state of terminal frame synchronization condition exists. If 1 - unmasked, 0 - masked. 6 MFSYNIM Multiframe Synchronization Interrupt Mask. When unmasked an interrupt is initiated whenever a change of state of multiframe synchronization condition exist. If 1 - unmasked, 0 - masked. 5 - - - Unused. 4 AISIM Alarm Indication Signal Interrupt Mask. When unmasked a change of state of received all ones condition will initiate an interrupt. If 1 - unmasked, 0 - masked. 3 LOSIM Loss of Signal Interrupt Mask. When unmasked an interrupt is initiated whenever a change of state of loss of signal condition exists. If 1 - unmasked, 0 - masked. Interrupt vector = 01000000. Table 32 - Interrupt Mask Word Zero (T1) (Page 1, Address 1BH) Bit Name Functional Description Table 31 - Reset Control Word (T1) (Page 1, Address 1AH) 2 SEFIM Severely Errored Frame Interrupt Mask. When unmasked an interrupt is initiated when a sequence of 2 framing errors out of 6 occurs. If 1 - unmasked, 0 - masked. 1 TxSLPIM Transmit SLIP Interrupt Mask. When unmasked an interrupt is initiated whenever a controlled frame slip occurs in the transmit elastic buffer. If 1 - unmasked, 0 - masked. 0 RxSLPIM Receive SLIP Interrupt Mask. When unmasked an interrupt is initiated whenever a controlled frame slip occurs in the receive elastic buffer. If 1 - unmasked, 0 - masked. Bit Name Functional Description 7 FEIM Framing Bit Error Interrupt Mask. When unmasked an interrupt is initiated whenever an erroneous framing bit is detected (provided the circuit is in terminal frame sync). If 1 - unmasked, 0 - masked. 6 CRCIM CRC-6 Error Interrupt Mask. When unmasked an interrupt is initiated whenever a local CRC-6 error occurs. If 1 - unmasked, 0 - masked. 5 YELIM Yellow Alarm Interrupt Mask. When unmasked detection of a yellow alarm triggers an interrupt. If 1 - unmasked, 0 - masked. 4 COFAIM Change of Frame Alignment Interrupt Mask. When unmasked an interrupt is initiated whenever a change of frame alignment occurs after a reframe. If 1 - unmasked, 0 - masked. Table 33 - Interrupt Mask Word One (T1) (Page 1, Address 1CH Bit Name Functional Description Table 32 - Interrupt Mask Word Zero (T1) (Page 1, Address 1BH) |
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