28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 159

• 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

6.4.8.4.6
In the case of an Octet Alignment (ALIGN) error, the HDLC message size after 0-bit extraction is not a multiple of 8
bits.
Reasons:
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Effects:
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Channel Level Recovery Actions:
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6.4.8.4.7
In the case of an Abort Termination (ABT) error, the receiver detects an abort sequence from the distant end. An
abort sequence is defined as 0 followed by 7 consecutive 1s.
Reason:
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Effects:
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Channel Level Recovery Actions:
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28478-DSH-002-E
Bit errors during transmission.
Incorrect transmission of HDLC messages from the distant end.
The Interrupt Descriptor in Interrupt Queue with ERROR = ALIGN, DIR = 0 (if MSKMSG = 0 in Receive
Channel Configuration Descriptor).
The entire HDLC message is transferred to shared memory.
DMAC accesses the Next Message Pointer from the current Message Descriptor.
Returns ownership of the current Message Descriptor to the host by writing the Receive Buffer Status
Descriptor with ONR = HOST, ERROR = ALIGN (if INHRBSD = 0 in Receive Channel Configuration
Descriptor).
The BLP scans for the opening flag of the next HDLC message.
Simultaneously, DMAC checks for Message Descriptor ownership before transferring received data to shared
memory.
None required.
The distant end can not complete transmission of HDLC message.
The Interrupt Descriptor in Interrupt Queue with ERROR = ABT, DIR = 0 (if MSKMSG = 0 in Receive Channel
Configuration Descriptor).
Partial HDLC message is transferred to shared memory.
DMAC accesses the Next Message Pointer from the current Message Descriptor.
Returns ownership of the current Message Descriptor to the host by writing the Receive Buffer Status
Descriptor with ONR = HOST, ERROR = ABT (if INHRBSD = 0 in Receive Channel Configuration Descriptor).
The BLP scans for the opening flag of the next HDLC message.
Simultaneously, DMAC checks for Message Descriptor ownership before transferring received data to shared
memory.
None required.
Octet Alignment (ALIGN) Error
Abort Termination (ABT)
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®
Basic Operation
146