参数资料
型号: 71M6541F-DB
厂商: Maxim Integrated Products
文件页数: 75/166页
文件大小: 0K
描述: DEMO BOARD 71M6541F
标准包装: 1
系列: *
71M6541D/F/G and 71M6542F/G Data Sheet
SERIAL READ
16 bit Address
8 bit CMD
Status Byte
DATA[ADDR]
DATA[ADDR+1]
(From Host) SPI_CSZ
Extended Read . . .
0
15
16
23
24
31
32
39
40
47
(From Host) SPI_CK
(From Host) SPI_DI
A15
A14
A1
A0
C7
C6
C5
C0
x
(From 6543) SPI_DO
HI Z
ST7
ST6
ST5
ST0
D7
D6
D1
D0
D7
D6
D1
D0
SERIAL WRITE
16 bit Address
8 bit CMD
Status Byte
DATA[ADDR]
DATA[ADDR+1]
(From Host) SPI_CSZ
Extended Write . . .
0
15
16
23
24
31
32
39
40
47
(From Host) SPI_CK
(From Host) SPI_DI
x
A15
A14
A1
A0
C7
C6
C5
C0
D7
D6
D1
D0
D7
D6
D1
D0
x
(From 6543) SPI_DO
HI Z
ST7
ST6
ST5
ST0
Figure 27: SPI Slave Port - Typical Multi-Byte Read and Write Operations
Table 63: SPI Command Sequences
Command Sequence
ADDR 1xxx xxxx STATUS
Byte0 ... ByteN
ADDR 0xxx xxxx STATUS
Byte0 ... ByteN
Rev 4
Description
Read data starting at ADDR. ADDR auto-increments until SPI_CSZ is
raised. Upon completion, SPI_CMD (SFR 0xFD) is updated to 1xxx xxxx
and an SPI interrupt is generated. The exception is if the command byte
is 1000 0000. In this case, no MPU interrupt is generated and SPI_CMD
is not updated.
Write data starting at ADDR. ADDR auto-increments until SPI_CSZ is
raised. Upon completion, SPI_CMD is updated to 0xxx xxxx and an SPI
interrupt is generated. The exception is if the command byte is 0000
0000. In this case, no MPU interrupt is generated and SPI_CMD is not
updated.
75
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