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LAN9252V/ML датащи(PDF) 116 Page - Microchip Technology

номер детали LAN9252V/ML
подробное описание детали  2/3-Port EtherCAT® Slave Controller with Integrated Ethernet PHYs
PDF  329 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9252V/ML датащи(HTML) 116 Page - Microchip Technology

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LAN9252
DS00001909A-page 116
 2015 Microchip Technology Inc.
10.2.6.3
Quad Data Write
The SPI Quad Data Write instruction inputs the instruction code and address bytes one bit per clock and inputs the data
four bits per clock. This instruction is supported in SPI bus protocol only with clock frequencies up to 80 MHz. This
instruction is not supported in SQI bus protocol.
The SPI slave interface is selected by first bringing SCS# active. The 8-bit SQDW instruction, 62h, is input into the SIO[0]
pin, followed by the two address bytes. The address bytes specify a BYTE address within the device.
The data follows the address bytes. The data is input into the SIO[3:0] pins starting with the msn of the LSB. The remain-
ing nibbles are shifted in on subsequent clock edges. The data write to the register occurs after the 32-bits are input. In
the event that 32-bits are not written when the SCS# is returned high, the write is considered invalid and the register is
not affected.
The SCS# input is brought inactive to conclude the cycle.
Figure 10-14 illustrates a typical single and multiple register quad data write.
FIGURE 10-14:
SPI QUAD DATA WRITE
SPI Quad Data Write Single Register
SCK (active high)
SIO0
00
11
X
Instruction
1
Address
SIO1
d
e
c
A
1
3
SPI Quad Data Write Multiple Registers
00
Z
SCK (active low)
SCS#
X
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
2
5
2
6
2
7
X
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
2
5
2
6
2
7
X
X
i
n
c
A
1
2
A
1
1
A
1
0
A
9
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
SCK (active high)
SIO0 X
Instruction
Address
SIO1
d
e
c
A
1
3
...
Z
SCK (active low)
SCS#
...
X
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
2
5
2
6
2
7
X
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
2
5
2
6
2
7
X
X
i
n
c
A
1
2
A
1
1
A
1
0
A
9
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
...
...
0
Data
D
5
D
4
D
1
Z
X
D
1
7
D
2
5
D
0
D
1
3
D
1
2
D
2
4
D
1
6
D
2
8
D
2
9
X
Data
D
6
D
2
D
1
4
D
1
8
D
2
6
D
3
0
D
7
D
3
D
1
5
D
1
9
D
2
7
D
3
1
Z
X
Z
X
Data
Data
D
9
D
8
D
2
1
D
2
0
D
1
0
D
2
2
D
1
1
D
2
3
SIO2
Z
SIO3
Z
2
8
2
9
3
0
3
1
3
2
2
8
2
9
3
0
3
1
3
2
...
...
...
...
Data 1...
Data m
Data m+1... Data n
D
5
D
4
D
1
D
0
D
1
3
D
1
2
D
1
7
D
2
5
D
2
4
D
1
6
D
2
8
D
2
9
Z
X
X
Data 1...
Data m
Data m+1... Data n
...
...
Data 1...
Data m
Data m+1... Data n
D
6
D
2
D
1
4
D
1
8
D
2
6
D
3
0
Z
X
...
...
Data 1...
Data m
Data m+1... Data n
D
7
D
3
D
1
5
D
1
9
D
2
7
D
3
1
Z
X
D
5
D
4
D
1
D
0
D
1
3
D
1
2
D
6
D
2
D
1
4
D
7
D
3
D
1
5
D
1
7
D
2
5
D
2
4
D
1
6
D
2
8
D
2
9
D
1
8
D
2
6
D
3
0
D
1
9
D
2
7
D
3
1
SIO2
Z
SIO3
Z
00
11
1
00
0



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