Rainbow Electronics DS26519 - Manual (Page 197)

DS26519 16-Port T1/E1/J1 Transceiver
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Register Name: RIIR
Register Description: Receive Interrupt Information Register
Register Address: 9Fh + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
Bit
# 7 6 5 4 3 2 1 0
Name — RLS7 RLS6* RLS5 RLS4 RLS3 RLS2** RLS1
Default 0 0 0 0 0 0 0 0
* RLS6 is reserved for future use.
** Currently RLS2 does not create an interrupt, therefore this bit is not used in T1 mode.
The Receive Interrupt Information Register indicates which of the DS26519 status registers are generating an
interrupt. When an interrupt occurs, the host can read RIIR to quickly identify which of the receive status registers
is (are) causing the interrupt(s). The Receive Interrupt Information Register bits will clear once the appropriate
interrupt has been serviced and cleared, as long as no additional, unmasked interrupt condition is present in the
associated status register. Status bits that have been masked via the Receive Interrupt Mask (RIMx) registers will
also be masked from the RIIR register.
Register Name: RIM1
Register Description: Receive Interrupt Mask Register 1
Register Address: 0A0h + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
Bit
# 7 6 5 4 3 2 1 0
Name RRAIC RAISC RLOSC RLOFC RRAID RAISD RLOSD RLOFD
Default 0 0 0 0 0 0 0 0
Bit 7: Receive Remote Alarm Indication Condition Clear (RRAIC)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 6: Receive Alarm Indication Signal Condition Clear (RAISC)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 5: Receive Loss of Signal Condition Clear (RLOSC)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 4: Receive Loss of Frame Condition Clear (RLOFC)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 3 : Receive Remote Alarm Indication Condition Detect (RRAID)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 2: Receive Alarm Indication Signal Condition Detect (RAISD)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 1: Receive Loss of Signal Condition Detect (RLOSD)
0 = Interrupt masked.
1 = Interrupt enabled.
Bit 0: Receive Loss of Frame Condition Detect (RLOFD)
0 = Interrupt masked.
1 = Interrupt enabled.