Texas Instruments DS125DF111EVM, Руководство пользователя

Страница: 10 / 23

Setup
www.ti.com
10 SNLU158A – January 2014 – Revised January 2016
Submit Documentation Feedback
Copyright © 2014–2016, Texas Instruments Incorporated
DS125DF111EVM Evaluation Board
(1)
A floating ADDR[1:0] pin at power-up will be interpreted as a logic 0.
Table 5. SMBus Write Address Assignment
(1)
ADDR1 ADDR0 SMBus Write SMBus Read
0 0 0x30 0x31
0 1 0x32 0x33
1 0 0x34 0x35
1 1 0x36 0x37
5.2.1 Register Architecture and Bit Fields
There are two types of device registers in the DS125DF111. These are the Control/Share Registers and
the Channel Registers. The Control/Share Registers control or allow observation of settings which affect
the operation of all channels of the DS125DF111. They are also used to select which channel of the
device is to be the target channel for reads from and writes to the Channel Registers.
The Channel Registers are used to set all the configuration settings of the DS125DF111. They provide
independent control for each channel of the DS125DF111 for all the configurable device characteristics.
Any registers not described in the datasheet tables should be treated as Reserved. The user should not
try to write new values to these registers. The user-accessible registers described in the datasheet provide
a complete capability for customizing the operation of the DS125DF111 on a channel-by-channel basis.
Many of the registers in the DS125DF111 are divided into bit fields. This allows a single register to serve
multiple purposes, which may be unrelated. Often configuring the DS125DF111 requires writing a bit field
that makes up only part of a register value while leaving the remainder of the register value unchanged.
5.2.2 Using SigCon Architect
SigCon Architect can be used to program the DS125DF111EVM. In order to use SigCon Architect for
SMBus Slave Mode access control, a DPS-DONGLE-EVM (see
SNLU184 ) or USB2ANY equivalent
adapter board must be used. This adapter board serves as an interface board to allow SMBus
communication between the PC and the DS125DF111 retimer. The SigCon Architect GUI features high
level control, low level register bit level control, and an Eye Monitor page to program the device. Examples
of these pages are shown in the following figures.
Figure 5. DS125DF111 High Level Page