參數(shù)資料
型號: KSZ9021GN
廠商: Micrel Inc
文件頁數(shù): 40/53頁
文件大?。?/td> 0K
描述: TXRX ETHERNET GB GMII/MII 64-MLF
標(biāo)準(zhǔn)包裝: 348
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 8/8
規(guī)程: 千兆位以太網(wǎng)
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 64-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 64-QFN(8x8)
包裝: 托盤
配用: 576-3873-ND - BOARD EVALUATION FOR KSZ9021GN
其它名稱: 576-3635
KSZ9021GN-ND
2009 Microchip Technology Inc.
DS22233A-page 45
MCP434X/436X
6.2
The SPI Modes
The SPI module supports two (of the four) standard SPI
modes. These are Mode 0,0 and 1,1. The mode is
determined by the state of the SDI pin on the rising
edge of the 1st clock bit (of the 8-bit byte).
6.2.1
MODE 0,0
In Mode 0,0: SCK idle state = low (VIL), data is clocked
in on the SDI pin on the rising edge of SCK and clocked
out on the SDO pin on the falling edge of SCK.
6.2.2
MODE 1,1
In Mode 1,1: SCK idle state = high (VIH), data is
clocked in on the SDI pin on the rising edge of SCK and
clocked out on the SDO pin on the falling edge of SCK.
6.3
SPI Waveforms
Figure 6-2 through Figure 6-5 show the different SPI
command waveforms. Figure 6-2 and Figure 6-3 are
read and write commands. Figure 6-4 and Figure 6-5
are increment and decrement commands. The high
voltage increment and decrement commands are used
to enable and disable WiperLock Technology and Write
Protect.
FIGURE 6-2:
16-Bit Commands (Write, Read) - SPI Waveform (Mode 1,1).
FIGURE 6-3:
16-Bit Commands (Write, Read) - SPI Waveform (Mode 0,0).
CS
SCK
Write to
SSPBUF
SDI
Input
Sample
SDO
bit15 bit14 bit13 bit12 bit11
bit10 bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
bit15 bit14 bit13 bit12
bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
AD3
AD2
AD1
AD0
C1
C0
X
D8
D7
D6
D5
D4
D3
D2
D1
D0
VIH
VIL
CMDERR bit
VIHH
CS
SCK
Write to
SSPBUF
SDI
Input
Sample
SDO
bit15
bit14 bit13 bit12 bit11
bit10 bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
bit15 bit14 bit13 bit12
bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
AD3
AD2
AD1
AD0
C1
C0
X
D8
D7
D6
D5
D4
D3
D2
D1
D0
VIH
VIL
CMDERR bit
VIHH
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