cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 104
cx28560
Manufacturer Part Number
cx28560
Description
Hdlc Controller
Manufacturer
Mindspeed Technologies
Datasheet
1.CX28560.pdf
(274 pages)
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The CX28560 Memory Organization
Table 5-16. BUFFC Interrupt Descriptors Format (1 of 3)
5-14
62:58
57:47
46:43
Field
Bit
63
42
41
40
39
38
TYP
RVSD
CH[10:0]
RVSD
DIR
RVSD
RXEOM/TXBOVFLW
RXEOC/TXEOC
RXEOCT/TXEOCT
Name
The following items describe the errors/events reported in the Non-BUFFC Interrupt
Descriptor.
BUFFC Interrupt Descriptor Format
The BUFFC interrupt descriptor is 64 bits wide, and the detailed description of its
fields is provided in
descriptor is always read as 0.
• RxBUFF/TxBUFF (Receive and Transmit Buffer errors underrun and
• TxEOM (Transmit End Of Message)
• RxCHABT (Receive Change to Abort)
• RxCHIC (Receive Change to Idle)
• RxCOFA/TxCOFA (Receive and Transmit Change Of Frame Alignment)
• RxCREC/TxCREC (Receive and Transmit COFA recovery)
• RxOOF (Receive Out Of Frame)
• SACKERR (Service Acknowledge Error, an attempt to access an illegal
• RxFREC/RxSPORT (Receive Frame Recovery, Receive Serial Port Interrupt)
overflow)
address within the CX28560)
Value
—
—
—
Mindspeed Technologies™
0
0
1
0
1
0
1
0
1
Interrupt descriptor—type 0.
Reserved.
Channel number causing the interrupt.
Reserved.
Direction—RX.
Direction—TX.
Reserved.
No Receive End of Message occurred.
No transmit channel internal overflow occurred.
If DIR = 0 (receive)—an End of Message occurred, even if errors were
detected (RXEOM) and the RXERR field is relevant.
If DIR = 1 (transmit)—a channel’s internal buffer overflowed.
End Of Command execution interrupt was not generated.
The RXEOCT/TXEOCT field is relevant.
If DIR = 0 (RX)—End Of Command execution interrupt occurs (RXEOC).
If DIR = 1 (TX)—End Of Command execution interrupt occurs (TXEOC).
End of Command Type—Deactivate.
This bit is only relevant if RXEOC/TXEOC is set.
End of Command Type—Activate.
This bit is only relevant if RXEOC/TXEOC is set.
Table
Advance Information
5-16. The most significant bit in the BUFFC interrupt
Description
CX28560 Data Sheet
28560-DSH-001-B
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