MT9074 Mitel Networks Corporation, MT9074 Datasheet - Page 40

• Manufacturer Part Number: MT9074
• Description: T1/E1/J1 Single Chip Transceiver
• Manufacturer: Mitel Networks Corporation

MT9074
40
interrupt registers are cleared IRQ will return to a
high impedance state. This function can also be
accomplished by toggling the INTA bit (page 1,
address 1AH).
All the interrupts of the MT9074 in T1 and E1 mode
are maskable. This is accomplished through interrupt
mask words zero to three, which are located on page
1, addresses 1BH to 1EH and the (optional) HDLC
interrupt mask located at address 16 of page B.
After a MT9074 reset (RESET pin or RST control bit),
all interrupts are masked.
All interrupts may be suspended, without changing
the interrupt mask words, by making the SPND
control bit of page 1, address 1AH high.
All interrupts are cleared by forcing the pin TxAO low.
Interrupts on T1 mode
Interrupt Mask Word Zero
Bit 7
Interrupt Mask Word One
Bit 7
Interrupt Mask Word Two
Bit 7
Interrupt Mask Word Three
Bit 7
HDLC Interrupt Masks
Bit 7
Interrupts on E1 mode
Interrupt Mask Word Zero
Bit 7
Interrupt Mask Word One
Bit 7
Interrupt Mask Word Two
Bit 7
Interrupt Mask Word Three
Bit 7
HDLC Interrupt Masks
Bit 7
TFSYNI MFSYNI TSAI
FEO CRCO OOFO COFAO BPVO PRBSO MFOOFO - - -
FEOM
SYNI
FERI
FEI
- - -
- - -
Ga
Ga
MFSYI
CRCI
CRCI
CRCO
EOPD TEOP
EOPD TEOP
- - -
- - -
YELI
EBI
CSYNI
EBOI
- - -
- - -
COFAI
AIS16I
EopR
EopR
LCDI
- - - BPVO PRBSO PRBSMO
JAI
AISI
AISI
Advance Information
1SECI 5SECI RCRI
1SECI 5SECI BIOMI
LOSI
BPVI
BPVI
TxFl
TxFl
LOSI
FATxU
FATxU
SEI
PRBSI
PRBSI AUXPI
CEFI
TxSLPI
RxFf
RxFf
PDVI
YI
Bit 0
Bit 0
RxSLPI
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
RxOv
RxOv
SLPI
Bit 0
SIGI
SIGI
RAII
- - -
- - -