參數(shù)資料
型號(hào)： 78M6618-IM/F
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, QCC68
封裝： 8 X 8 MM, ROHS COMPLIANT, TQFN-68
文件頁數(shù)： 4/32頁
文件大?。?/td> 419K
代理商： 78M6618-IM/F
78M6618 Data Sheet
DS_6618_005
12
Rev. 1.4
The SPI port supports data transfers at up to 1 Mb/s. The SPI commands are described in Table 1 and
Figure 4 illustrates the SPI Interface read and write timing.
Table 1: SPI Command Description
Command
Description
11xx xxxx ADDR D0 ... DN
Output data on PSDO is read from RAM starting with byte at ADDR.
ADDR will auto-increment until PCSZ is raised.
MPU SPI interrupt is generated
1100 0000 ADDR D0 ... DN
Output data on PSDO is read from RAM starting with byte at ADDR.
ADDR will auto-increment until PCSZ is raised.
No MPU SPI interrupt is generated
10xx xxxx ADDR D0 ... DN
Input data on PSDI is written to RAM starting with byte at ADDR.
ADDR will auto-increment until PCSZ is raised.
MPU SPI interrupt is generated
1000 0000 ADDR D0 ... DN
Input data on PSDI is written to RAM starting with byte at ADDR.
ADDR will auto-increment until PCSZ is raised.
No MPU SPI interrupt is generated
CMD
ADDR D0 ... DN
CMD and ADDR are available to the CPU in IORAM
D0 … DN
are ignored.
MPU SPI interrupt is generated
A15
A14
A1
A0
C0
0
31
x
D7
D6
D1
D0
D7
D6
D1
D0
C5
C6
C7
x
PCSZ
PSCK
PSDI
PSDO
8 bit CMD
16 bit Address
DATA[ADDR]
DATA[ADDR+1]
7
8
23
24
32
39
Extended Read . . .
SERIAL READ
A15
A14
A1
A0
C0
0
31
C5
C6
C7
x
PCSZ
PSCK
PSDI
PSDO
8 bit CMD
16 bit Address
DATA[ADDR]
DATA[ADDR+1]
7
8
23
24
32
39
Extended Write . . .
SERIALWRITE
D7
D6
D1
D0
D7
D6
D1
D0
x
HI Z
(From Host)
(From 6531)
(From Host)
(From 6531)
Figure 4: SPI Slave Port: Typical Read and Write Operations
Since the addresses are in 16-bit format, any type of XRAM data can be accessed: CE, MPU or IORAM
but not SFRs or the 80515-internal register bank. See the 78M6618 Programmer’s Reference Manual for
more information regarding the mapping and use of SPI functions.
1.19 Test Port
One out of 16 digital or 8 analog signals can be selected to be output on the TMUXOUT pin. See the
78M6618 Programmer’s Reference Manual for more information regarding the use of TMUXOUT.
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