Cirrus-logic CDB61880 Bedienungsanleitung

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Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright
Cirrus Logic, Inc. 2002
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
CDB61880
Octal E1 Line Interface Evaluation Board
Features
z
Socketed CS61880 Octal Line Interface Unit
z
Binding post connectors for power and line
interface connections
z
Components supplied for all operational
modes E1 75 and E1 120
z
Socketed termination circuitry for easy
testing
z
Connector for IEEE 1149.1 JTAG Boundary
Scan
z
LED Indicators for Loss of Signal (LOS) and
power
z
Supports Hardware, Serial, and Parallel Host
Modes
z
Easy-to-use evaluation software
z
On-board socketed reference clock oscillator
Description
The CS61880 evaluation board is used to demonstrate
the functions of a CS61880 Octal Line Interface Unit in
either E1 75
or E1 120
.
The evaluation board can be operated in either Hard-
ware mode or Host mode. In Hardware mode, switches
and bed stake headers are used to control the line con-
figuration and channel operations for all eight channels.
In Host mode (Serial or Parallel), the evaluation soft-
ware, switches, and bed stake headers are used to
control the line configuration and operating mode set-
tings for each channel.
In both Hardware and Host modes, the board may be
configured for E1 75
or E1 120
operating modes. In
both modes binding post connectors provide easy con-
nections between the line interface connections of the
CS61880 and any E1 analyzing equipment, which may
be used to evaluate the CS61880 device. Bed stake
headers allow easy access to each channel’s clock and
data I/O digital interface.
Eight LED indictors display the Loss of Signal (LOS)
conditions for each channel during Hardware and Host
modes. An LED indictor is used on the Interrupt pin to in-
dicate a change of state.
Note: Click on any text in blue to go to cross-references
ORDERING INFORMATION
CS61880-IQ -40° to 85° C 144-pin LQFP
CDB61880 Evaluation Board
MAR ‘02
DS450DB1
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Inhaltsverzeichnis

Seite 1 - CDB61880

Preliminary Product InformationThis document contains information for a new product.Cirrus Logic reserves the right to modify this product without not

Seite 2

CDB6188010 DS450DB14. HOST SOFTWARE INTERFACEThe software provided with the CDB61880 evalu-ation board is used to control and monitor theCS61880 devi

Seite 3

CDB61880DS450DB1 114.3.1 Clear All Button DescriptionThe CLR All Button shown Figure 14 is used to setall the bits in the corresponding register to 0

Seite 4

CDB6188012 DS450DB15. CS61880 CONFIGURATION SCREENS 5.1 Choose Parallel Port SettingsThe opening screen shown before in Figure 11 andnow in Figure 1

Seite 5

CDB61880DS450DB1 135.3 Loopback /Bits Clock ScreenThe Loopback /Bits Clock Register tabbed screenshown in Figure 20 allows access to the followingreg

Seite 6

CDB6188014 DS450DB15.4 LOS/AIS/DFM/JA Register ScreenThe LOS/AIS/DFM/JA Register tabbed screenshown in Figure 21 allows access to the followingregist

Seite 7

CDB61880DS450DB1 155.5 Transmitter Register ScreenThe Transmitter Register screen shown inFigure 22 consists of the following registers: - Automatic

Seite 8

CDB6188016 DS450DB15.6 AWG Register ScreenThe AWG Register screen shown in Figure 23 al-lows access to the following AWG registers: - AWG Broadcast-

Seite 9

CDB61880DS450DB1 175.7 Global Control Register ScreenFigure 24 shows the Global Control Register(GCR) screen, The GCR register screen consists ofthe

Seite 10

CDB6188018 DS450DB16. BOARD CONFIGURATIONS6.1 E1 75 ΩΩΩΩ Mode SetupTable 4 shows the position of the different switchesand jumpers used to set up th

Seite 11

CDB61880DS450DB1 196.2 E1 120 ΩΩΩΩ Mode SetupTable 5 shows the position of the different switchesand jumpers used to set up the CDB61880 evalua-tion

Seite 12

CDB618802 DS450DB1TABLE OF CONTENTS1. CDB61880 EVALUATION BOARD LAYOUT ... 42

Seite 13

CDB6188020 DS450DB17. EVALUATION HINTS- Pin #1 of the socket is indicated by an arrow with U1 below it.- A short in the desired position must be plac

Seite 14

• Notes •

Seite 16

CDB61880DS450DB1 35.1 Choose Parallel Port Settings ... 125.2 A

Seite 17

CDB618804 DS450DB11. CDB61880 EVALUATION BOARD LAYOUTFigure 1. CDB61880 Board Layout

Seite 18

CDB61880DS450DB1 52. BOARD COMPONENT DESCRIPTIONS2.1 Power Connections Power for the CDB61880 evaluation board is sup-plied by an external +3.3 V DC

Seite 19

CDB618806 DS450DB12.3 Operating Mode SelectionThe operating mode for the CS61880 can be select-ed by setting switch S15 to one of the positionsshown

Seite 20

CDB61880DS450DB1 7mitters in a high impedance state. Removing theshorting block, enables the transmitters. SeeFigure 5.2.6 Clock Edge SelectionIn clo

Seite 21 - • Notes •

CDB618808 DS450DB12.9 Line Length/Impedance SelectionIn Hardware mode, switch S11 (CBLSEL) is usedto set the internal or external line impedance for

Seite 22

CDB61880DS450DB1 92.13 Digital Signal ConnectionsThere are eight fourteen pin bed stake headers (la-beled J4 through J11) that provide access to thed

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