80ksbr200 Integrated Device Technology, 80ksbr200 Datasheet - Page 74

• Manufacturer Part Number: 80ksbr200
• Description: Srio Serial Buffer Flow-control Device
• Manufacturer: Integrated Device Technology

„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
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IDT 80KSBR200
Notes
Port 0 Link Maintenance Response CSR
this register returns the status received in a link-response control symbol. This register is read-only.
Port 0 Local ackID Status CSR
register returns the local ackID status for both the output and input ports of the device. Care should be taken to use this
register only for hot swap and not software error management.
Note:
Note:
Name:
Name:
The port 0 link maintenance response register is accessible both by a local processor and an external device. A read to
The port n local ackID status register is accessible both by a local processor and an external device. A read to this
4:0
9:5
30:10
31
4:0
7:5
12:8
23:13
28:24
31:29
Bit
Bit
1.
1.
P0_LNK_MAINT_RES_CSRAddress:
P0_LOC_ACK_STAT_CSRAddress:
The above register is described in the RIO Specification Part 6, sec. 6.6.2.6
The above register is described in the RIO Specification Part 6, sec. 6.6.2.7
LNKS
ACKS
-
RVLD
OBACKID
-
OACKID
-
IACKID
-
Field Name
Field Name
0x00
0x00
0
1b0
0x00
0
0x00
0
0x00
0
Table 31 Port 0 Link Maintenance Response CSR
Reset
Value
Reset
Value
74 of 172
Table 32 Port 0 Local ackID Status CSR
Link Status:
link status field from the link-response control symbol.
ackID Status:
ackID status field from the link-response control symbol.
Reserved.
Response Valid:
If the link-request causes a link-response, this bit indicates that the
link-response has been received and the status fields are valid.
If the link-request does not cause a link-response, this bit indicates
that the link-request has been transmitted.
This bit automatically clears on read.
Outbound Ack ID:
This can be written by software but only if there are no outstanding
unacknowledged packets. If there are, a newly-written value will be
ignored.
Reserved.
Outstanding port unacknowledge ackID status:
Next expected acknowledge control symbol ackID field that indicates
the ackID value expected in the next received acknowledge control
symbol. Note that this value is read-only even though RIO spec
allows for it to be writable.
Reserved.
Inbound ackID:
Input port next expected ackID value.
Reserved.
0x000144
0x000148
Comment
Comment
Advanced Datasheet*
March 19, 2007