![Struck SIS3820 Скачать руководство пользователя страница 48](http://html1.mh-extra.com/html/struck/sis3820/sis3820_user-manual_1385462048.webp)
SIS Documentation
SIS3820
VME Scaler
Page 48 of 79
7.33 One wire Id. register (tbd)
(not implemented in 3820 01 01/02 firmware)
#define SIS3820_ONE_WIRE 0xtbd /* read/write; D32; */
A DS2430 256-Bit 1-wire EEPROM is installed on the SIS3820 to store the serial number of
the module. This information is stored in the 64-bit
A DS2430 256-Bit 1-wire EEPROM is installed on the SIS3820 to store the serial number of
the module. This information is stored in the 64-bit application register of the DS2430 in the
factory.
Offset Contents
Example SIS3820-64 SN 10
0 0x38
1
Module Id.
0x20
2 0x00
3
SDRAM
size
0x64
4 0x00
5 0x00
6 0x00
7
Serial
Number
0x0A
Note:
Module Id. and SDRAM size are stored in hexadecimal form for better readability, the
serial number is stored as straight 32-bit decimal value.
Refer to the PDF data sheet of the DS2430 and the LINUX example program rom_read.c on
the SIS3820 documentation CDROM for details on the operation of the EEPROM.
Bit
Read function
Write function
31 0 not
used
... ...
16 0 not
used
15 BUSY
cmd
RESET
14 Present
cmd
WRITE
13 0 cmd
READ
12 0 reserved
11 0 reserved
10 0 reserved
9 reserved
reserved
8 reserved
reserved
7
read datum bit7
write datum bit7
6
read datum bit6
write datum bit6
5
read datum bit5
write datum bit5
4
read datum bit4
write datum bit4
3
read datum bit3
write datum bit3
2
read datum bit2
write datum bit2
1
read datum bit1
write datum bit1
0
read datum bit0
write datum bit0