參數(shù)資料
型號: ISP1109
廠商: NXP Semiconductors N.V.
英文描述: Universal Serial Bus transceiver with carkit support
中文描述: 與車載通用串行總線收發(fā)器支持
文件頁數(shù): 29/59頁
文件大?。?/td> 295K
代理商: ISP1109
9397 750 13355
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 14 July 2005
29 of 59
Philips Semiconductors
ISP1109
USB transceiver with carkit support
To read a field of data, pin SPI_MISO will output the data field pointed to by the five
address bits loaded at the beginning of the SPI sequence.
Figure 7
shows the details of an SPI transfer.
Figure 8
shows a multiple read and write by using the SPI bus.
9.4 I
2
C-bus protocol
For detailed information, refer to The I
2
C-bus Specification; Version 2.1
9.4.1
I
2
C-bus byte transfer format
[1]
S = Start.
[2]
A = Acknowledge.
[3]
P = Stop.
Fig 7.
SPI transfer.
004aaa489
address 3 address 2
address 1 address 0
dead bit
data 24
data 23
SPI_CLK
SPI_MISO
SPI_MOSI
SPI_CS
write_en
address 4
data 0
data 24
data 23
data 0
Fig 8.
SPI multiple read and write.
004aaa490
SPI_CS
preamble
25-bit data
25-bit data
SPI_MOSI
first address
preamble
another address
25-bit data
25-bit data
SPI_MISO
Table 38:
S
[1]
I
2
C-bus byte transfer format
Byte 1
A
[2]
8 bits
Byte 2
8 bits
A
[2]
Byte 3
8 bits
A
[2]
..
..
A
[2]
P
[3]
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