28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 154

• 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

6.4.8.2.7
Reasons:
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Effects:
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6.4.8.2.8
Reason:
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Effects:
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6.4.8.3
Transmit errors are service-affecting and require a corrective action by a controlling device to resume normal bit-
level processing.
6.4.8.3.1
In this case, MUSYCC attempts to access the [next] Message Descriptor when the prior descriptor contained only
a portion of the message (EOM = 0), and MUSYCC finds that ownership of the [next] descriptor has not been
granted by the host (i.e., the next buffer is host-owned).
This error results when currently transmitting an HDLC message, and no additional descriptors are available in a
timely manner.
Once a descriptor is granted, however, MUSYCC assumes ownership of the message buffer and continues reading
data until the end of buffer is reached. If the host reclaims the buffer without MUSYCC granting ownership back to
the host, a host error occurs, and the effects are indeterminate.
Reason:
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Effects:
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28478-DSH-002-E
BLP decremented the SUERM counter. The channel is in SS7 mode. The SUERM counter decrements by one
when MUSYCC receives 256 consecutive unerrored messages.
Interrupt Descriptor in Interrupt Queue with EVENT = SDEC, DIR = 0
(if MSKSDEC = 0 in Receive Channel Configuration Descriptor).
BLP and DMAC continue with normal message processing.
BLP detected an unerrored 3, 4, or 5 octet message identical to the previous message. The channel is in SS7
mode.
Interrupt Descriptor in Interrupt Queue with EVENT = SFILT, DIR = 0
(if MSKSFILT = 0 in Receive Channel Configuration Descriptor).
BLP discards the received message in the FIFO.
BLP and DMAC continue with normal message processing.
Degradation of the host subsystem or application software performance.
Partial HDLC message transmission has occurred.
Interrupt Descriptor in Interrupt Queue with ERROR = ONR, DIR = 1
(if MSKBUFF = 0 in Transmit Channel Configuration Descriptor).
Transmit channel enters abort state where the BLP transmits a repetitive abort sequence of 16 consecutive 1s.
Transmit Buffer Status Descriptor cannot be written.
SS7 SUERM Octet Count Decrement (SDEC)
SS7 Filtered Message (SFILT)
Transmit Errors
Underflow Due to Host Ownership of Buffer (ONR)
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Basic Operation
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