 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS4237B Datasheet(PDF) 60 Page - Cirrus Logic |
|
|
|||||||||||||||||||||||||||||
CS4237B Datasheet(HTML) 60 Page - Cirrus Logic |
|
|
60 / 114 page  GAME PORT INTERFACE The Game Port logical device software interface utilizes 10-bit address decoding and is located at PnP address ’GAMEbase’. 10-bit addressing re- quires that the upper address bits be 0 to decode a valid address, i.e. no aliasing occurs. For back- wards compatibility, the Game Port consists of 8 I/O locations where the lower 6 alias to the same location, which consists of one read and one write register. Plug and Play configuration capability will allow the joystick I/O base address, GAMEbase, to be located anywhere within the host I/O address space. Currently most games software assume that the joystick I/O port is located at 200h. A write to the GAMEbase register triggers four timers. A read from the same register returns four status bits corresponding to the joystick fire buttons and four bits that correspond to the out- put from the four timers. A button value of 0 indicates the button is pressed or active. The button default state is 1. When GAMEbase is written, the X/Y timer bits go high. Once GAMEbase is written, each timer output remains high for a period of time deter- mined by the current joystick position. The number in parenthesis below is the joystick con- nector pin number. GAMEbase+0 - GAMEbase+5 D7 D6 D5 D4 D3 D2 D1 D0 JBB2 JBB1 JAB2 JAB1 JBCY JBCX JACY JACX JACX Joystick A, Coordinate X (pin 3) JACY Joystick A, Coordinate Y (pin 6) JBCX Joystick B, Coordinate X (pin 11) JBCY Joystick B, Coordinate Y (pin 13) JAB1 Joystick A, Button 1 (pin 2) JAB2 Joystick A, Button 2 (pin 7) JBB1 Joystick B, Button 1 (pin 10) JBB2 Joystick B, Button 2 (pin 14) Two bits, JR1 and JR0, are located in the Con- trol register space (CTRLbase+0) for defining the speed of the Game Port Interface. Four dif- ferent rates are software selectable for use with various joysticks and to support older software timing loops with aliasing (roll-over) problems. GAMEbase+6 D7 D6 D5 D4 D3 D2 D1 D0 resres resres resres resres res Must not write any value to this register. May read any value. GAMEbase+7 D7 D6 D5 D4 D3 D2 D1 D0 resres resres resres resres res Must not write any value to this register. May read any value. The Game Port hardware interface consists of 8 pins that connect directly to the standard game port connector. Buttons must have a 4.7 k Ω pul- lup resistor and a 1000 pF capacitor to ground. X/Y coordinates must have a 5.6 nF capacitor to ground and a 2.2 k Ω series resistor to the appro- priate joystick connector pin. For a detailed hardware description, see the Reference Design Data Sheet. DS213PP4 CS4237B 60 |
Similar Part No. - CS4237B |
|
Similar Description - CS4237B |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
