Changes between Version 69 and Version 70 of gsc


Ignore:
Timestamp:
01/05/2021 05:05:31 PM (2 years ago)
Author:
Bobby Jones
Comment:

Update i2c address table

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  • gsc

    v69 v70  
    1919
    2020The GSC communicates with the host CPU over the i2c bus and uses the following 7-bit i2c slave addresses:
    21  * 0x20 - GSC configuration registers
    22  * 0x21 - GSC software update registers
    23  * 0x23 - PCA9555 emulated I/O (common industry standard GPIO port expander)
    24  * 0x29 - system monitor (similar to industry standard AD7418 but with modified register set - see below)
    25  * 0x50 - 24c04 emulated EEPROM (256B) (common industry standard EEPROM device)
    26  * 0x51 - 24c04 emulated 256 byte EEPROM (common industry standard EEPROM device)
    27  * 0x52 - 24c04 emulated 256 byte EEPROM (common industry standard EEPROM device) (some models only)
    28  * 0x53 - 24c04 emulated 256 byte EEPROM (common industry standard EEPROM device) (some models only)
    29  * 0x5e - Direct memory access read register
    30  * 0x68 - DS1672 emulated RTC (common industry standard device)
     21
     22||= Address =||= Name =||= Description =||
     23|| 0x20 || [#registers GSC configuration registers] || RAM based registers that can be [#reg_save_load saved/loaded] ||
     24|| 0x21 || [#firmware GSC software update registers] || i2c based update mechanism ||
     25|| 0x23 || [#gpio PCA9555 emulated I/O] || Common industry standard GPIO port expander ||
     26|| 0x29 || [#hwmon System monitor] || Similar to industry standard AD7418 but with modified register set ||
     27|| 0x50 || [#eeprom 24c04 emulated EEPROM] || Common industry standard 256B EEPROM device ||
     28|| 0x51 || [#eeprom 24c04 emulated EEPROM] || Common industry standard 256B EEPROM device ||
     29|| 0x52 || [#eeprom 24c04 emulated EEPROM] || Common industry standard 256B EEPROM device - some models only ||
     30|| 0x53 || [#eeprom 24c04 emulated EEPROM] || Common industry standard 256B EEPROM device - some models only ||
     31|| 0x5e || [#GSC_MEM_ACCESS_PAGE Direct memory access register] || Supports reads only ||
     32|| 0x68 || [#rtc DS1672 emulated RTC] || Common industry standard device ||
     33
    3134
    3235[[Image(gateworksgsc.png,400px)]]