Manual

73M1822/73M1922 Implementer’s Guide UG_1x22_052
22 Rev. 1.0
6.2 DET Interrupt
The triggering of the DET interrupt indicates that the device has detected one of several line condition
errors. When found, it can be assumed that there is a problem with the line status. The general
corrective action is for the line side device to go on hook. These interrupts are only valid when the device
is in an off hook condition.
0x05
ENGPIO7
ENGPIO6
ENGPIO5
ENGPIO4
ENAPOL
ENDET
ENSYNL
ENRGDT
Write
X X X X 1 1 X X
0x12
OFH
ENDC
ENAC
ENSHL
ENLVD
ENFEL
ENDT
ENNOM
Write 1 1 1 x x 1 1 x
0x13
DCIV1
DCIV0
ILM
RSVD
PLDM
OVDTH
IDISPD
IDISPD
Write X X 0 0 0 1/0 0 0
0x14
TXBST
DAA1
DAA0
Res
RXBST
RLPNH
RXG1
RXG0
Write X X X 0 X X X X
0x15 Res DISNTR Res CIDM THEN ENUVD ENOVD ENOID
Write 0 0 0 0 1 1 1 1
0x1E
ILMON
UVDET
OVDET
OIDET
SLLS
Res
Res
Res
Read X ? ? ? X X X X
Set the ENDET bit in Register 0x05 to enable the DET interrupt.
Begin
1. If DET = 1 (IntSrc = xxxx_x1xx).
2. Read RG1E
3. If OVDET = 1, report condition to user and put device on hook.
4. If OIDET = 1, report condition to user and put device on hook
5. If UVDET = 1, report condition to user and put device on hook
End
6.3 SYNL Interrupt
The triggering of the SYNL interrupt indicates that the device has detected a failure in the barrier between
the line and host side device. When found, it can be assumed that there is a problem with the barrier.
This failure is usually a problem with the PLL operation, therefore, the recommended way to deal with this
interrupt is to reset the device PLL.
0x05 ENGPIO7 ENGPIO6 ENGPIO5 ENGPIO4 ENAPOL ENDET ENSYNL ENRGDT
Write
X X X X 1 X 1 X
Set the RNSYNL bit in Register 0x05 to enable the SYNL interrupt.
Begin
1. If SYNL = 1 (IntSrc = xxxx_xx1x), goto Barrier Synchronization Process (see Barrier Synchronization
Section 3.2.1)
End