cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 149

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

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8.2.7.4
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8.2.7.5
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8.2.7.6
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8.2.8
Transmit errors are service-affecting and require a corrective action by a controlling device (i.e., the Host) to
resume normal channel processing.
28500-DSH-002-C
CHABT Interrupt (if IDLEIEN = 1 in
RSLP and RDMA continue normal processing.
RSLP detects received data changed to flag (7Eh) octets. CX28500 requires detection of three consecutive
flags and the previous idle code is all 1s before a CHIC event is generated.
CHIC interrupt (if IDLEIEN = 1 in
RSLP and RDMA continue normal processing.
RSIU detects the serial interface ROOF signal transition from an out-of-frame (ROOF = 1) to an in-frame
(ROOF = 0) condition. If the ROOF signal is programmed for use as an out-of-frame indicator, this frame
recovery event (ROOF returning low) generates a FREC interrupt after one full frame without ROOF assertion.
If the ROOF signal is used as a general-purpose interrupt input, this event generates a SPORT (Serial PORT)
interrupt. Since both FREC and SPORT interrupt events are reported in the same field in the non-DMA
interrupt descriptor, the user must interpret the event according to how the ROOF signal is used.
FREC/SPORT Interrupt (if OOFIEN = 1 in
RSLP and RDMA continue normal processing.
RSIU terminates the internal COFA condition due to the arrival of a RSYNC/TSTB pulse followed by at least
the assigned number of time slots for this port without another unexpected RSYNC/TSTB pulse.
RCREC Interrupt (if COFAIEN = 1 in
RSLP and RDMA continue normal processing.
NOTE:
Change to Idle Code (CHIC)
Frame Recovery (FREC) or Generic Serial PORT (SPORT) Interrupt
Receive COFA Recovery (RCREC)
Transmit Errors
After channel activation/reactivation, the first flags detected on the line generate a CHIC
interrupt.
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Section
Section
Table 6-28, RSIU Port Configuration
6.6.2).
Table 6-28, RSIU Port Configuration
6.6.2).
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Register).
Register).
Basic Operations
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