 |
Moteur de recherche de fiches techniques de composants électroniques |
|
|
Moteur de recherche de fiches techniques de composants électroniques |
|
CDB8130 Fiches technique(PDF) 3 Page - Cirrus Logic |
|
||||||||||||||||||||||||||||||
CDB8130 Fiches technique(HTML) 3 Page - Cirrus Logic |
|
|
3 / 10 page  CDB8130 DS170DB5 3 1 CS8130 INFRARED TRANSCEIVER The CDB8130 provides an example application of the CS8130 infrared transceiver. This application is similar to an IR pod system that is designed to plug into any standard RS-232 port, like the COM port on the back of an IBM ®-compatible PC, to provide an easy-to-use infrared interface. Additionally, the board allows for easy interfacing directly to the CS8130 through stake header J11 al- lowing other applications to be easily realized. Figure 1 shows the CS8130 and RS-232 level translator connections. A description of the CS8130 including register def- initions, control pin assignments, and other useful information can be found in the CS8130 data sheet. 1.1 Power Supply Circuitry and Grounding Figure 2 shows the power supply configuration of the evaluation board. Power is supplied to the board by two terminal blocks and a DC power jack, J21, J22, and J23 (DCPWR). To operate the board from a single power supply, stake jumper J20 must be installed. In this configuration, power should be supplied to the board through the VD+/DGND ter- minal block (J21) or the DCPWR jack (J23). A 3.3V regulator, U5, is supplied on the board. To use this regulator, stake jumper J2 (USE REG) should be installed. To bypass the regulator, J1 (NO REG) should be installed. To isolate the power supply driving the CS8130 from the supply powering the rest of the circuitry, remove J20, and feed the CS8130’s power supply into the VA+/AGND terminal block (J22). The rest of the circuit should be powered through either the VD+/DGND terminal block (J21) or the DCPWR jack (J23). Using the on-board voltage regulator, the evalua- tion board may be powered from any DC voltage between +4V and +6.5V. If the voltage regulator is bypassed, the acceptable operating voltage is be- tween +2.7V and +5.5V (defined by the power sup- ply requirements of the CS8130.) The evaluation board is split into two ground planes, an analog plane and a digital plane. The CS8130 and IR components reside on the analog plane, and the RS-232 level translator, reset circuit, and status indicator circuitry lie over the digital ground plane. The ground planes are connected in exactly one place at jumper J31, located near the power supply connections. 1.2 Reset Circuit Figure 3 shows the power-up and user-activated re- set circuit. As shipped from the factory, this circuit is not used. The RESET signal is instead supplied by the RS-232 interface signal RTS. This configu- ration allows the CS8130 to be reset under software control. To derive the reset function from the power- up/manual reset circuit instead, remove stake jumper J9 (RTS) and install stake jumper J12 (RE- SETSW). These jumpers are shown in Figure 1. 1.3 Optical Interface The CDB8130 is shipped with Temic ® and Hewlett-Packard ® IR components installed. The receiver PIN diode is Temic model BPV 22 NF. Transmit LED D5 is a Hewlett-Packard HSDL- 4220, and D6 is a Temic TSHA5502. These components are not soldered in place. In- stead, they are held by gold-plated pins. These pins allow for any insertion and removal of other IR components for performance and compatibility evaluation. The default configuration for the transmitter circuit has one LED per output driver. One or both LEDs can be active at the same time by programming the appropriate register in the CS8130, allowing soft- ware to control the transmitter output power. Additionally, the transmit drivers on the CS8130 can be connected in parallel to share current. This |
Numéro de pièce similaire - CDB8130 |
|
Description similaire - CDB8130 |
|
|
|
Lien URL |
| Politique de confidentialité |
| ALLDATASHEET.FR |
| ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
French ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
