4 signaling, Signaling, Table 9-17. registers related to signaling – Rainbow Electronics DS26519 User Manual
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DS26519 16-Port T1/E1/J1 Transceiver
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9.9.4 Signaling
The DS26519 supports both software and hardware-based signaling. Interrupts can be generated on changes of
signaling data. The DS26519 is also equipped with receive-signaling freeze on loss of synchronization (OOF),
carrier loss or change of frame alignment. The DS26519 also has hardware pins to indicate signaling freeze.
Features include the following:
Flexible signaling support:
Software or hardware based
Interrupt generated on change of signaling data
Receive-signaling freeze on loss of frame, loss of signal, or change of frame alignment
Hardware pins for carrier loss and signaling freeze indication
Table 9-17. Registers Related to Signaling
REGISTER
FRAMER 1
ADDRESSES
FUNCTION
Transmit-Signaling Registers 1 to 16
(
140h to 14Bh (T1/J1)
140h to 14Fh (E1 CAS)
Transmit ABCD signaling.
Software-Signaling Insertion Enable
Registers 1 to 4 (
to SSIE4)
118h, 119h, 11Ah, 11Bh
When enabled, signaling is inserted for
the channel.
Transmit Hardware-Signaling Channel
Select Registers 1 to 4
(
to THSCS4)
1C8h, 1C9h, 1CAh, 1CBh
Bits determine which channels will have
signaling inserted in hardware-signaling
mode.
Receive-Signaling Control Register
(
013h
Freeze control for receive signaling.
Receive-Signaling All-Ones Insertion
Registers 1 to 3
(
to T1RSAOI3)
038h, 039h, 03Ah
Registers for all-ones insertion (T1 mode
only).
Receive-Signaling Registers 1 to 16
(
040h to 04Bh (T1/J1)
040h to 04Fh (E1)
Receive-signaling bytes.
Receive-Signaling Status Registers 1
to 4 (
to RSS4)
098h to 09Ah (T1/J1)
98h to 9Fh (E1)
Receive-signaling change of status bits.
Receive-Signaling Change of State
Enable Registers 1 to 4 (
to
RSCSE4)
0A8h, 0A9h, 0AAh, 0ABh
Receive-signaling change of state
interrupt enable.
Receive Latched Status Register 4
(
)
093h
Receive-signaling change of state bit.
Receive Interrupt Mask Register 4
(
0A3h
Receive-signaling change of state
interrupt mask bit.
Receive-Signaling Reinsertion Enable
Registers 1 to 4 (
to RSI4)
0C8h, 0C9h, 0CAh, 0CBh
Registers for signaling reinsertion.
Note: The addresses shown above are for Framer 1.