80KSBR200 Datasheet, PDF (42/172 Pages) Integrated Device Technology – sRIO SERIAL BUFFER FLOW-CONTROL DEVICE

IDT 80KSBR200
Notes
Advanced Datasheet*
predetermined system host (defined in the Port-write Target deviceID CSR). SerB sets the Port-write Pending status bit in
the Port 0 Error and Status CSR. A 16 byte data payload of the Maintenance Port-write packet contains the contents of
several CSR, as shown in table below. Once System Software receives an Port-write operation, it indicates that it has seen
the port-write by clearing the Port-write Pending status bit in the Port 0 Error and Status CSR.
The Component Tag CSR is defined in the RapidIO Part 3: Common Transport Specification, and is used to uniquely
identify the reporting device within the system. A Port ID field contains all 0’s indicating port 0, the Logical/Transport Layer
Error Detect CSR, and the Port 0 Error Detect CSR are used to describe the encountered error condition.
Data
Payload
Byte Offset
0x0
0x4
0x8
0xC
Word
Component TAG CSR
Port 0 Error Detect CSR
Implementation Specific
Logical/Transport Layer Error Detect CSR
Table 2 Port-write Packet Data Payload for Error Reporting
7.3 sRIO Errors Supported
PortID(byte)
7.3.1 Physical Layer Errors
Table below lists all the RIO link errors detected by the SerB physical layer and the actions taken by SerB. The Error
Enable column lists the control bits that may disable the error checking associated with a particular error (if blank, error
checking cannot be disabled). The Cause Field column indicates what cause field will be used with the associated packet-
not-accept control symbol for Input Error Recovery. The EME Error Enable/Detect column indicates which bit of the
P0ERECSR allows the error to increment the Error Rate Counter and lock the Port 0 Error Capture registers, and likewise
which bit of the P0EDCSR is set when the error has been detected.
Table 4 below, Physical RIO Threshold Response, lists SerB behavior after exceeding certain preset limits (Degraded
Threshold, Failed Threshold, Retry Threshold).
Physical RIO Errors Detected
Error
Error Enable
SerB action
Cause Field
EME Error
Type
EME Error
Enable /
Detect
Received character had a dis-
parity error.
Enter Input Error 5: Received Delineation
DE
Stopped.
invalid/illegal
Error
Enter Output Error character
Stopped.
Received an invalid character,
or valid but illegal character
Enter Input Error
Stopped.
Enter Output Error
Stopped.
5: Received
invalid/illegal
character
The four contol character bits
associated with the received
symbol do not make sense (not
0000, 1000, 1111).
Enter Input Error
Stopped.
Enter Output Error
Stopped.
5: Received
invalid/illegal
character
Control symbol does not begin
with an /S/ or /PD/ control char-
acter.
Enter Input Error
Stopped.
Enter Output Error
Stopped.
5: Received
invalid/illegal
character
Table 3 Physical RIO Errors Detected
42 of 172
March 19, 2007
„2005 Integrated Device Technology, Inc. All rights reserved. Advanced Datasheet for informational purposes only. Product specifications subject to change without notice.NOT AN OFFER FOR SALE The information presented herein is subject to a
Non-Disclosure Agreement (NDA) and is for planning purposes only. Nothing contained in this presentation, whether verbal or written, is intended as, or shall have the effect of, a sale or an offer for sale that creates a contractual power of acceptance.