cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 73

• Manufacturer Part Number: cx29503
• Description: Cx29503 Broadband Access Multiplexer Data Sheet
• Manufacturer: Mindspeed Technologies

CX29503 Data Sheet
29503-DSH-002-B
DS1/E1 Transmit Framer:
Performance Monitoring:
Alarm and Error Insertion:
Loopback Capability:
Supports the following framing pattern:
RLOF detection—LOF failure detection is supported in the DS1 mode
AIS detection
RAI detection—Support both yellow alarm (RYEL) and multiframe yellow alarm
(RMYEL) in the real-time and integration modes
Supports manual AIS insertion toward the line side
Supports manual and automatic (in the Receiver CRC error condition) FEBE
insertion toward the line side
Supports manual and automatic (in the RLOF condition) insertion of RAI toward
the line side
Supports auto-AIS insertion to the system side, under software control, during an
OOF condition
Supports the insertion of a single frame, COFA, or CRC error
Supports programmable 4- to 7-bit in-band loop code transmission and detection
Supports out-of-band ESF loop code transmission and detection via the Bit-
Oriented Protocol handler
Loopback modes supported
Payload loopback—Only the line-side receiving payload data is looped back to
E1 modes supported—FAS-only and FAS + MFAS (CRC4) mode.
Channel Associated Signaling (CAS) mode is not supported.
DS1 modes supported—SF and ESF.
SLC-96 and T1DM frame formats are not supported.
PM Counters function
All alarms and PM counter overflow events provide maskable interrupt
capability
In the Extended Superframe (ESF) auto-RAI mode, the yellow alarm code
word can be transmitted through the embedded FDL channel
Remote Line loopback—The entire line-side receiving data is looped back to
the transmitter. In this mode, the receive clock is used to drive the transmitter.
the transmitter, overhead data is continuously sourced from the transmitter.
Because the transmitted data is driven by the transmit clock, the received
payload data passes through a 64-bit FIFO to accommodate the receiver jitter
(mainly introduced from the VT/VC mapper). The slip status is provided to
indicate a FIFO underflow or overflow condition. This status operates in reset-
on-read modes.
Local Framer loopback—The entire transmitted data is looped back to the
receiver.
– Support Frame, CRC, FEBE, LOF, SEF, and COFA error counts
– All error counters operate in real-time updating mode and 1-second latched
– Frame, CRC, and FEBE counters are capable of holding over 1 second of
mode
errors without overflow
Mindspeed Technologies™
Preliminary Information
Functional Description
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