參數(shù)資料
型號: DS2490S
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: Bus Controller
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PDSO24
封裝: 0.300 INCH, SO-24
文件頁數(shù): 41/51頁
文件大?。?/td> 444K
代理商: DS2490S
DS2490
46 of 50
COMMUNICATION COMMANDS
byte 2 - page number to be used for the first read attempt.
byte 1 – page size: number of bytes that are considered a page.
Typical is 32 decimal for data memory. Page size 0 indicates a 256-
byte page.
wlength
0x0000
SEARCH ACCESS
Setup Packet Encoding:
bmRequestType
0x40
bRequest
COMM_CMD
wValue
byte 2
byte 1
byte 2:
0
RTS
0
F
NTF
ICP
RST
byte 1:
1
SM
1
0
IM
wIndex
byte 2
byte 1
byte 2 – number of devices. Maximum number of devices to be
discovered in a single command call. A value of 0x00 indicates that
all devices on the 1-Wire Network are to be discovered.
byte 1 – 1-Wire command:
Command to be used for addressing a 1-Wire device. Valid codes:
0xF0 (Search ROM)
0xEC (Conditional Search ROM)
wLength
0x0000
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