28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 165

• Manufacturer Part Number: 28478G-18
• Description: Multichannel Synchronous Communications Controller 208-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of 28478G-18

• Package: 208BGA
• Maximum Data Rate: 32768 Kbps
• Transmission Media Type: Wire
• Power Supply Type: Analog
• Typical Supply Current: 250 mA
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V

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Channel Level Recovery Actions:
•
6.4.9.4.4
Out-of-frame or loss-of-frame indicates the entire serial data stream is invalid, and data cannot be recovered from
such a signal.
Reasons:
•
Effects:
•
•
•
•
Channel Level Recovery Actions:
•
6.4.10
ISLP is supported by setting the following bit field value referenced in
Descriptor: FCS = 1, PROTOCOL = 2
6.5
6.5.1
Signaling System 7 (SS7) requires the ability to continuously repeat a message under certain circumstances. The
Repeat Message Transmission section of this document describes the repeat feature fully and is usable for an SS7
application.
6.5.2
Message filtering is always enabled for a receive channel which is configured for SS7-HDLC-CRC16 mode in
Table 5-18, Channel Configuration
28478-DSH-002-E
If bit field OOFABT is set to 1 in the Group Configuration Descriptor, suspend channel activity. Received data
bits are discarded and lost to the host processor.
If OOFABT = 1, once the received signal has recovered, reactivate receive channel with a Channel Activate or
Channel Jump Service Request or with a slave write into the Receive Channel Configuration Table.
A signal failure detected by the physical interface providing the serial data, clock frequency, and
synchronization to the serial interface on MUSYCC.
MUSYCC writes the Interrupt Descriptor in Interrupt Queue with ERROR = OOF, DIR = 0.
The received data in the internal FIFO buffer is discarded and lost to the host.
If OOFABT bit field is set to 0 in the Group Configuration Descriptor, continue channel activity but transfer all 1s
data into shared memory for the duration of the OOF. When the OOF condition clears, normal bit-level
processing resumes automatically without host intervention.
If OOFABT bit field is set to 1 in the Group Configuration Descriptor, channel activity suspends without
transferring any data to shared memory.
When OOFABT selects receive message processing disabled, the host must reactivate the receive channel
after the OOF condition has cleared. Reactivation is not required if OOFABT allows receive message
processing to continue.
Out of Frame (OOF)
Intersystem Link Protocol (ISLP)
Signaling System 7
SS7 Repeat Message Transmission
Message Filtering
Preliminary Information / Mindspeed Proprietary and Confidential
Descriptor.
Mindspeed Technologies
®
Table 5-18, Channel Configuration
Basic Operation
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