Cirrus-logic AN83 Manual de usuario Pagina 18
- Pagina / 58
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
AN83
18 AN83REV3
PROM is not necessary for the CS8900A, and the
CS8900A will respond to IO addresses 0300h
through 030Fh after a reset.
Please refer to the CS8900A data sheet for informa-
tion about programming the EEPROM. Please re-
fer to “JUMPERLESS DESIGN” on page 45 of
this document for information about EEPROM in-
ternal word assignments.
LEDs
Many embedded systems do not require LEDs for
the Ethernet traffic. Therefore this reference de-
sign does not implement any LEDs. However, the
CS8900A has direct drives for the three LEDs.
Please refer to the data sheet for the CS8900A for a
description of the LED functions available on the
CS8900A.
10BASE-T Interface
The 10BASE-T interface for the CS8900A is
straight forward. Please refer to Figure 8 (3.3V)
and Figure 10 (5V) for connections and compo-
nents of this circuit. Transmit and receive signal
lines from the CS8900A are connected to an isola-
tion transformer at location T1. This isolation
transformer has a 1:1 ratio between the primary and
the secondary windings on the receive side. It has
a 1:√2 (1:1.414) ratio between the primary and the
secondary windings for the transmit lines for 5V
operation or a ratio of 1:2.5 for 3.3V operation. Re-
sistor R1 provides termination for the receive lines.
Resistors R2 and R3 are in series with the differen-
tial pair of transmit lines for impedance matching.
10BASE-2 and AUI Interfaces
As many embedded systems require only a
10BASE-T interface, this reference design imple-
ments only the 10BASE-T interface. However,
should a user require a 10BASE-2 or AUI inter-
face, the CS8900A provides a direct interface to the
AUI. Please refer to “Low Cost Ethernet Combo
Card Reference Design: CRD8900” on page 21 of
this document for details about the AUI interface.
Logic Schematics
Figures 8, 9 and 10 detail the logic schematics for
the various circuits used in the reference design.
10BT_RD-
100
R2
8
R4
8
R5
.1uF .1uF
C23
.1uF 2KV
C28
.1uF 2KV
C29
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
1
2
3
4
5
6
7
8
16
(1-3) (16-14) 1:1
(6-8) (11-9) 1:2.5
10BaseT Transformer
15
14
13
12
11
10
10
J21
9
16
15
14
13
12
11
10
9
9
Do Not
Populate
560pF
C30
10BT_RD+
10BT_TD-
10BT_TD+
Do Not
Populate
Figure 8. 10BASE-T Schematic 3.3V
- Application Note 1
- TABLE OF CONTENTS 2
- AN83REV3 3 3
- SCHEMATIC CHECKLIST 4
- SOFTWARE CHECKLIST 5
- INTRODUCTION TO CS8900A 6
- TECHNICAL REFERENCE MANUAL 6
- HARDWARE DESIGN 7
- BUS SYSTEMS 7
- The CS8900A Architecture 7
- CS8900A in I/O Mode 8
- CS8900A in Memory Mode 8
- DMA Interface of the CS8900A 8
- Address Generation 9
- Read and Write Signals 10
- SBHE Signal 10
- Other Control Signals 10
- Status Signals from CS8900A 11
- Databus (SD[0:15]) Connection 11
- EEPROM Optional 11
- Cirrus Logic CL-PS7211 12
- Hitachi SH3 12
- AN83REV3 13 13
- 14 AN83REV3 14
- AN83REV3 15 15
- CS8900 EVAL BOARD REV. B 16
- P/N CDB8900B 16
- CS8900 EVAL BOARD REV. C 17
- 10BASE-T Interface 18
- 10BASE-2 and AUI Interfaces 18
- Logic Schematics 18
- AN83REV3 19 19
- Bill of Material 20
- AN83REV3 21 21
- AN83REV3 23 23
- 24 AN83REV3 24
- AN83REV3 25 25
- AUI Interface 26
- AN83REV3 27 27
- 28 AN83REV3 28
- AN83REV3 29 29
- Memory Mode 31
- Lower Memory Mode 31
- Extended Memory Mode 31
- 32 AN83REV3 32
- Figure 23. PAL Program 34
- AN83REV3 39 39
- 40 AN83REV3 40
- AN83REV3 41 41
- 42 AN83REV3 42
- AN83REV3 43 43
- RECOMMENDED MAGNETICS FOR 44
- THE CS8900A 44
- JUMPERLESS DESIGN 45
- Serial EEPROM 45
- Reset Configuration Block 45
- Table 6. Transformer Vendors 46
- IEEE Physical Address 49
- ISA Configuration Flags 49
- PacketPage Memory Base 50
- Boot PROM Memory Base 50
- Boot PROM Mask 50
- Transmission Control 50
- Adapter Configuration Word 51
- EEPROM Revision 51
- Manufacturing Date 52
- IEEE Physical Address (Copy) 52
- 16-bit Checksum 52
- Serial Number 53
- Serial ID Checksum 53
- Embedded Designs 54
- OBTAINING IEEE ADDRESSES 55
- DEVICE DRIVERS AND 56
- SETUP/INSTALLATION SOFTWARE 56
- Installation Procedure 56
- CONTACTING CUSTOMER SUPPORT 57
- AT CIRRUS 57
- Cirrus Web Site 57
Relacionado con productos y manuales para Hardware Cirrus-logic AN83
Hardware Cirrus-logic AN194 Manual de usuario
(6 paginas)
(6 paginas)
Hardware Cirrus-logic AN181 Manual de usuario
(6 paginas)
(6 paginas)
Hardware Cirrus-logic CS8900A Manual de usuario
(138 paginas)
(138 paginas)
Hardware Cirrus-logic CS8952 Manual de usuario
(12 paginas)
(12 paginas)
Hardware Cirrus-logic CS8952 Manual de usuario
(81 paginas)
(81 paginas)
Hardware Cirrus-logic AN199 Manual de usuario
(8 paginas)
(8 paginas)
Hardware Cirrus-logic EP7309 Manual de usuario
(42 paginas)
(42 paginas)
Hardware Cirrus-logic EP7311 Manual de usuario
(42 paginas)
(42 paginas)
Hardware Cirrus-logic EP7312 Manual de usuario
(54 paginas)
(54 paginas)
Hardware Cirrus-logic AN179 Manual de usuario
(8 paginas)
(8 paginas)
Hardware Cirrus-logic EP73xx Manual de usuario
(158 paginas)
(158 paginas)
Hardware Cirrus-logic AN186 Manual de usuario
(12 paginas)
(12 paginas)
Hardware Cirrus-logic AN187 Manual de usuario
(12 paginas)
(12 paginas)
Hardware Cirrus-logic AN273 Manual de usuario
(4 paginas)
(4 paginas)
Hardware Cirrus-logic AN265 Manual de usuario
(3 paginas)
(3 paginas)
Hardware Cirrus-logic AN266 Manual de usuario
(4 paginas)
(4 paginas)
Hardware Cirrus-logic AN255 Manual de usuario
(2 paginas)
(2 paginas)
Hardware Cirrus-logic AN258 Manual de usuario
(6 paginas)
(6 paginas)
Hardware Cirrus-logic AN269 Manual de usuario
(65 paginas)
(65 paginas)
Hardware Cirrus-logic EDB9302A Manual de usuario
(40 paginas)
(40 paginas)
© 2020, manymanuals.es. Todos los derechos reservados | 0.053 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales