參數(shù)資料
型號: IDT88K8483BRI
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 131/162頁
文件大小: 0K
描述: IC SPI-4 EXCHANGE 3PORT 672-BGA
標(biāo)準(zhǔn)包裝: 24
系列: *
其它名稱: 88K8483BRI
70 of 162
October 20, 2006
IDT IDT88K8483
Clock Generator Type M
Clock generator type M generates the internal clock MCLK and the external SPI-4 main interface clocks (EDCLK, ISCLK, ISCLK_T) as shown in
. The MCLK clock is used for the generic interface, the PFP block and the PMON block. The clock
generator source is the external signal SPI4M_RCLK. The MCLK frequency is selected by the N field in the MCLK Divider Sticky Register (p. 104).
The N field value can be modified at any time during normal operation. The SPI-4 operation rate is selected by the external signal SPI4M_CLK_SEL.
The external signal DIV4 configures the prescaler frequency to divide by 4 or 1.
Figure 36 Clock Generator Type M
Clock Generator Type T
Clock generator type T generates the SPI-4 tributary interface clocks (EDCLK, ISCLK, ISCLK_T) as shown in Figure 37 Clock Generator
. The clock generator sources are the external signals SPI4A_RCLK and SPI4B_RCLK. SPI-4 operation rate is selected by the external
signals SPI4A_CLK_SEL and SPI4B_CLK_SEL. The external signal DIV4 configures the prescaler frequency to divide by 4 or 1.
Figure 37 Clock Generator Type T
* 32 PLL
ISCLK
EDCLK
SPI4M_RCLK
div 2/8
div 4
MCLK
ISCLK_T
SPI4M_CLK_SEL
div 4/1
div 2/3/4/5
prescaler
DIV4
N
* 32 PLL
ISCLK
EDCLK
SPI4A_RCLK
SPI4B_RCLK
div 2/8
div 4
ISCLK_T
SPI4A_CLK_SEL
SPI4B_CLK_SEL
div 4/1
prescaler
DIV4
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