80ksbr200 Integrated Device Technology, 80ksbr200 Datasheet - Page 90

• 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
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.
IDT 80KSBR200
Notes
8.2.3 Parallel Port Configuration Register
clear all memory contents in the queue. The registers may be read at any time, without upsetting the content.
8.2.4 Memory Allocation Register
memory is available for allocation in block size that are 1/8th of the total SRAM capacity, hence 8 register bits[15:8]. The
external memory allocation is dependent upon the size of the external memory attached, but is available in block sizes that
are 1/4th of the total external memory capacity and hence 4 register bits[7:4].
Note:
Note:
Name:
Name:
Name:
The
The default configuration is dependent upon the hard-wired inputs. A change to the contents of this register will also
The
Bits
1:0
11:2
12
31:13
Bit
0
1
3:2
31:4
Bit
3:0
7:4
15:8
31:16
Parallel Port Configuration Register
Memory Allocation Register
SPORT_CFG_REG
PPORT_CFG_REG
MEM_ALLOC_REG
Field Name
SP_SPEED
-
816_RIO_DESTID
-
Field Name
PPORT_ON
-
EXT_MEM_SZ
-
Field Name
-
EXT_MEM_BLK
INT_MEM_BLK
-
Type
RST
RST
Type
RST
HW
Type
RW
RW
is used to allocate both the internal and external memory to queue 0. Internal
Table 52 Serial Port Configuration Register
90 of 172
Address:
Address:
Table 53 P-Port Configuration Register
Address:
Table 54 Memory Allocation Register
Reset
Value
HW
0
HW
0
Reset
Value
HW
0
HW
0
Reset
Value
4h0
4h0
8hFF
0
is used to set up the external QDRII SRAM memory.
0x18008
0x18010
0x18014
Comment
S-Port Speed Select:
00 = 1.25G, 01 = 2.5G, 10 = 3.125G, 11 = reserved
Reserved
8 or 16 bit sRIO Destination ID:
0 = 8-bit destination ID, 1 = 16-bit destination ID
Reserved
Comment
Parallel Port On/Off:
0 = On, 1 = Off
Reserved for future use
External Memory Size:
00 = 36M, 01 = 72M, 1X = reserved
Reserved
Comment
Reserved
External Memory Block Allocation
Internal Memory Block Allocation
Reserved
Advanced Datasheet*
March 19, 2007