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): 40/51頁
文件大小: 444K
代理商: DS2490S
DS2490
45 of 50
COMMUNICATION COMMANDS
assumed. If Z = 1 the comparison of the byte read back for
verification is limited to 0 bits only.
Setup Packet Encoding:
bmRequestType
0x40
bRequest
COMM_CMD
wValue
byte 2
byte 1
byte 2:
0
DT
0
F
NTF
ICP
0
byte 1:
1
0
Z
1
0
IM
wIndex
byte 2
byte 1
byte 2 – block size (HI), number of bytes to be written, most
significant byte
byte 1 – block size (LOW), number of bytes to be written, least
significant byte
wLength
0x0000
READ CRC PROT PAGE
DT = 1 selects the CRC16 generator, otherwise an 8-bit CRC is
assumed. This command is also applicable to the Read IPR and Read
I/O Buffer function of the crypto iButton if CIB = 1.
Setup Packet Encoding:
bmRequestType
0x40
bRequest
COMM_CMD
wValue
byte 2
byte 1
byte 2:
0
PS
DT
0
F
NTF
ICP
0
byte 1:
1
0
1
0
1
0
IM
wIndex
byte 2
byte 1
byte 2 –number of pages to be read.
byte 1 – page size: log(base 2) of the number of bytes that are
considered a page. Typical is 32-decimal for data memory and 8 for
status memory. Page size 0 indicates a 256-byte page. As an
example, if the actual page size is 3210, then the Page Size parameter
would need to be 0x05
wLength
0x0000
READ REDIRECT PAGE
W/CRC
Setup Packet Encoding:
bmRequestType
0x40
bRequest
COMM_CMD
wValue
byte 2
byte 1
byte 2:
0
1
0
F
NTF
ICP
1
byte 1:
1
0
CH
1
0
IM
wIndex
byte 2
byte 1
相關(guān)PDF資料
PDF描述
DS2502P 128 X 8 OTPROM, PDSO6
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DS2502 128 X 8 OTPROM, PBCY3
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DS2505P 16K X 1 OTPROM, PDSO6
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