10. Registers > IDT Specific Miscellaneous Registers
CPS-1848 User Manual
279
June 2, 2014
Formal Status
This document is confidential and is subject to an NDA.
Integrated Device Technology
10.9.4
Port {0..17} Watermarks Register
The watermark values in this register should be set based on the buffer size of the link partner and the required traffic
characteristics for packets of each priority. For more information, see
Transmitter- and Receiver-Controlled Flow Control
For base address information, see
Port n Watermarks Base Addresses
. The broadcast version of this register is
Register Name: PORT_{0..17}_WM
Reset Value: 0x0000_20C4
Register Offset: 0x (0x10 * port_num)
Bits
0
1
2
3
4
5
6
7
00:07
Reserved
08:15
Reserved
PRIO_2
16:23
PRIO_2
PRIO_1
24:31
PRIO_1
PRIO_0
Bits
Name
Description
Type
Reset
Value
0:13
Reserved
Reserved
RO
0
14:19
PRIO_2
Value of Watermark 2 (WM2) for transmitter-controlled flow
control functionality.
a
a. As defined in the RapidIO Specification (Rev. 2.1).
RW
0x02
20:25
PRIO_1
Value of Watermark 1 (WM1) for transmitter-controlled flow
control functionality.
RW
0x03
26:31
PRIO_0
Value of Watermark 0 (WM0) for transmitter-controlled flow
control functionality.
RW
0x04