參數(shù)資料
型號(hào): 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(yè)數(shù): 42/51頁(yè)
文件大?。?/td> 444K
代理商: DS2490S
DS2490
47 of 50
APPENDIX 3: DS2490 MODE COMMANDS, SETUP PACKET ENCODING
MODE COMMANDS
ENABLE PULSE
Setup Packet Encoding:
bmRequestType
0x40
bRequest
MODE_CMD
wValue
MOD_PULSE_EN
wIndex
byte 2
byte 1
byte 2 – 0x00
byte 1:
0
SPUE
PRGE
Strong pullup is enabled with SPUE = 1, disabled with SPUE = 0.
+12V Programming pulse is enabled with PRGE = 1, disabled with PRGE
= 0.
wLength
0x0000
ENABLE SPEED CHANGE
Setup Packet Encoding:
bmRequestType
0x40
bRequest
MODE_CMD
wValue
MOD_SPEED_CHANGE_EN
wIndex
byte 2
byte 1
byte 2 – 0x00
byte 1 – Boolean value. Speed changes are enabled with TRUE, disabled
with FALSE.
wLength
0x0000
1-WIRE SPEED
Setup Packet Encoding:
bmRequestType
0x40
bRequest
MODE_CMD
wValue
MOD_1WIRE_SPEED
wIndex
byte 2
byte 1
byte 2 – 0x00
byte 1 – 1-Wire speed:
Code specifying communication speed of the 1-Wire bus. See MODE
CONTROL section for code definition.
wLength
0x0000
STRONG PULLUP
DURATION
Setup Packet Encoding:
bmRequestType
0x40
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