Table 8-105, Semaphore registers, Table 8-106 – Artesyn ATCA-8310 Installation and Use (May 2014) User Manual
Page 317: Table 8-107, Cpld and fpga
CPLD and FPGA
ATCA-8310 Installation and Use (6806800M72E)
317
8.2.2.3.22 Semaphore Registers 1 to 4
The Glue Logic FPGA has four Semaphore Registers.
8.2.2.3.23 Shared Memory 8 byte Area. Page 1
Chapter 8, Page Pointer 1 to Shared Memory, on page 316
on how to select one of the 256
pages.
Table 8-105 Semaphore Registers
Address: 0x4A, 0x4B, 0x4C, 0x4D
Bit Description
Default
Access
1:0
Read access to Semaphore Register. 1, 2, 3 and 4:
00: State "Not Taken".
01: State "Taken". Opposite side is owner.
11: State "Taken and got Ownership."
0
GPP: r
SPP: r
1:0
Write access to Semaphore Register. 1, 2, 3 and 4:
00: No effect
01: Set State to "Not Taken". Triggers interrupt on opposite side.
(When enabled)
10: Request Ownership.
11: Reserved.
-
GPP: w1c
SPP: w1c
7:2
Reserved
0
r
Table 8-106 SPP Shared Memory 8 byte Area. Page 1
Address: 0x50 - 0x57
Bit Description
Default
Access
7:0
Data of 2kB Shared Memory.
0
SPP: r/w
Table 8-107 GPP Shared Memory 8 byte Area. Page 1
Address: 0x50 - 0x57
Bit Description
Default
Access
7:0
Data of 2kB Shared Memory.
0
GPP: r/w