80KSBR200 Datasheet, PDF (92/172 Pages) Integrated Device Technology – sRIO SERIAL BUFFER FLOW-CONTROL DEVICE

IDT 80KSBR200
Notes
Name: PAE_PAF_REG
Address: 0x18058
Bit
Field Name
7:0
15:8
31:16
PAE_Q0
PAF_Q0
-
Type
RW
RW
Reset
Value
Comment
8h0F
Program Almost Empty
8h0F
Program Almost Full
16h0F0F Reserved
Table 57 PAE / PAF Register
Advanced Datasheet*
8.2.8 Waterlevel Control Registers
There is a waterlevel associated with each queue. If the waterlevel is used, the watermark should be set to zero. If the
queue is a doorbell master, the watermark should be set at maximum.
Watermark Register
Name: WATER_MARK_ REG
Address: 0x18068
Bit
22:0
Field Name
WATER_MARK
23
DW_PKT_CNT
31:24 -
Type
RW
RW
Reset
Value
Comment
23h0
1b0
Watermark:
Waterlevel trigger point
D-Word or Packet Count:
0 = Count Packets, 1 = Count D-Words
0
Reserved
Table 58 Watermark Register
Waterlevel Register
Name: WATER_LEVEL_ REG Address: 0x1806C
Bit
22:0
Field Name
WATER_LEVEL
31:23 -
Type
RO
Reset
Value
Comment
23h0
0
Waterlevel:
Quantity in queue, in D-Words or packets
Reserved
Table 59 Waterlevel Register
Space Available Register
Name: SPACE_ AVAIL_REG
Address: 0x18070
Bit
22:0
Field Name
SPC_AVAIL
31:23 -
Type
Reset
Value
Comment
RO
23h0
Space Available:
Remaining space in D-Words, will update to available space on
next few clock cycles
0
Reserved
Table 60 Space Available Register
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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.