參數(shù)資料
型號: KS8995M
廠商: Micrel Inc
文件頁數(shù): 30/73頁
文件大?。?/td> 0K
描述: IC SWITCH 10/100 5PORT 128PQFP
標準包裝: 66
系列: *
類型: *
應用: *
安裝類型: 表面貼裝
封裝/外殼: 128-BFQFP
供應商設備封裝: 128-PQFP(14x20)
包裝: 散裝
KS8995M
Micrel
M9999-120403
36
December 2003
To use the KS8995M SPI:
1. At the board level, connect KS8995M pins as follows:
KS8995M
Microprocessor Signal
Pin Number
Signal Name
Description
112
SPIS_N
SPI Slave Select
110
SPIC
SPI Clock
111
SPID
Master Out Slave Input
109
SPIQ
Master In Slave Output
Table 9. SPI Connections
2. Set the input signals PS[1:0] (pins 113 and 114 respectively) to “10” to set the serial configuration to SPI slave mode.
3. Power up the board and assert a reset signal. After reset, the start switch bit in register 1 will be set to ‘0’. Configure
the desired settings in the KS8995M before setting the start register to ‘1’.
4. Write configuration to registers using a typical SPI write data cycle as shown in Figure 8 or SPI multiple write as shown
in Figure 10. Note that data input on SPID is registered on the rising edge of SPIC.
5. Registers can be read and configuration can be verified with a typical SPI read data cycle as shown in Figure 9 or
a multiple read as shown in Figure 11. Note that read data is registered out of SPIQ on the falling edge of SPIC.
6. After configuration is written and verified, write a ‘1’ to register 1 bit 0 to begin KS8995M operation.
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