參數(shù)資料
型號: 71M6541G-IGT/F
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 模擬信號調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PQFP64
封裝: LEAD FREE, LQFP-64
文件頁數(shù): 140/165頁
文件大?。?/td> 2208K
代理商: 71M6541G-IGT/F
76
2008–2011 Teridian Semiconductor Corporation
v1.1
Table 64: SPI Registers
Name
Location
Rst
Wk
Dir
Description
EX_SPI
2701[7]
0
R/W
SPI interrupt enable bit.
SPI_CMD
SFR FD[7:0]
R
SPI command. The 8-bit command from the bus master.
SPI_E
270C[4]
1
R/W
SPI port enable bit. It enables the SPI interface on pins
SEGDIO36 – SEGDIO39.
IE_SPI
SFR F8[7]
0
R/W
SPI interrupt flag. Set by hardware, cleared by writing a 0.
SPI_SAFE
270C[3]
0
R/W
Limits SPI writes to SPI_CMD and a 16 byte region in
DRAM when set. No other write operations are permitted.
SPI_STAT
2708[7:0]
0
R
SPI_STAT contains the status results from the previous
SPI transaction.
Bit 7: Ready error: The 71M654x was not ready to read
or write as directed by the previous command.
Bit 6: Read data parity: This bit is the parity of all bytes
read from the 71M654x in the previous command. Does
not include the SPI_STAT byte.
Bit 5: Write data parity: This bit is the overall parity of the
bytes written to the 71M654x in the previous command.
It includes CMD and ADDR bytes.
Bit 4-2: Bottom 3 bits of the byte count. Does not include
ADDR and CMD bytes. One, two, and three byte
instructions return 111.
Bit 1: SPI FLASH mode: This bit is zero when the TEST
pin is zero.
Bit 0: SPI FLASH mode ready: Used in SPI FLASH
mode. Indicates that the flash is ready to receive
another write instruction.
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