Maxim DS33Z41 Spezifikationen PDF herunterladen (Seite 15)

Q3. How is the absolute address calculated in the DS31256 HDLC controller?

A3. The absolute address, also known as the real address or machine address, is a fixed address in memory. The absolute

address is the base address plus the actual address being used by the device. For proper operation, the absolute address

must be allocated correctly when configuring the DMA controller in the device. The equation for calculating the absolute

address is:

Absolute Address = Base Address + Actual Address in Use

For example, consider the DS31256 HDLC envoy controller's receive done queue end address being used by the device.

The actual end address is not an absolute address. If the base address is 0x10000000 and the receive done queue end

address is 0x400, the calculation is:

0x10009000 + 0x400 * 4, and the absolute address is 0x1000A000.

7. Design Kit Questions

Q1. How can I get the most updated definition files for the T1E1DK?

A1. The definition files are available by request from the Maxim telecommunication applications support group (telecom.

[email protected]).

Q2. What software is available for Maxim telecommunication design kits?

A2. The software used with the Maxim telecommunication design kits is known as ChipView. ChipView is a PC-based

demonstration program that is used to interact with Maxim T/E carrier design kits. The program has been written to

control all T/E carrier design kits that utilize either a serial or USB port. ChipView has three basic modes of operation:

demo mode, register view, and terminal mode.

Demo mode provides a high-level user interface for configuring the device registers on the daughter cards using radio

buttons and menu selections. The current device status for functions such as LOS, OOF, and AIS is displayed with easy-to-

read widgets. This interface is meant to make device configuration as easy as possible.

Register view mode provides an intuitive user interface for reading, writing, and viewing the individual device registers on

the daughter card. The device registers are displayed by name in an on-screen array, and the values can be changed

using the keyboard or mouse. This interface provides complete control of every bit and function of the specific device.

Terminal mode provides direct access to the design kit's processor. The list of all recognized commands is listed when the

user types "help" or "?" at the command prompt. This mode is for low-level debugging of the daughter card and should be

reserved for seasoned users.

Q3. What telecommunication device design kits are currently available from Maxim?

A3. There are two kinds of telecommunication design kits available from Maxim. The first type is a stand-alone design kit

that contains computer-interface circuitry and an evaluation device. The second type is a combination motherboard and

daughter card. The motherboard contains the computer-interface circuitry and the daughter card contains the evaluation

device. The DK101 mother board is a low-cost version that supports a single daughter card. The DK2000 mother board is

a high-performance version that supports multiple daughter cards.

The following devices have stand-alone design kits available:

DS2174, DS21Q50, DS21Q58, DS21Q59, DS26303, DS26324, DS26334, DS26502, DS26503, DS26504, DS26518,

DS26519, DS26521, DS26522, DS3104, DS3150, DS3153, DS3154, DS3164, DS3174, DS3184, DS32506, DS32508,

DS32512, DS3253, DS3254, DS33R11, DS33R41, DS33W41, DS33X11, DS33X162, DS33Z11, DS33Z41, DS33Z44,

DS34S104, DS34S108, DS34T104, DS34T108

The following devices have daughter card design kits available:

DS21352, DS21354, DS21455, DS21458, DS2148/DS21348, DS2155, DS2156, DS21Q348/DS21448, DS26401,

DS26518, DS26519, DS26521, DS26522, DS26524, DS26528, DS3112/DS3150, DS3144/DS3154

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