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參數(shù)資料
| 型號(hào)： | ICS82C404M |
| 英文描述： | Dual Programmable Graphics Frequency Generator |
| 中文描述： | 雙頻率可編程圖形發(fā)生器 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 610K |
| 代理商： | ICS82C404M |
Control Register Definition
The control register allows the user to adjust various internal options. The register is defined as follows:
Bit
9
Bit Name
C5
Default Value
0
Description
8
7
6
5
4
3
2
1
C4
C3
C2
C1
C0
NS2
NS1
NS0
0
0
0
1
0
0
0
0
This bit determines which power-down mode the PD pin will
implement. Power-down mode 1, C5=0, forces the MCLK signal to
be a function of the power-down register. Power-down mode 2,
C5=1, turns off the crystal and disables all outputs.
This bit determines which clock is multiplexed to VCLK during
frequency changes. C4=0 multiplexes the reference frequency to the
VCLK output. C4=1 multiplexes MCLK to the VCLK output for
applications where the graphics controller cannot run as slow as
f
REF
.
This bit determines the length of the time-out interval. The time-out
interval is derived from the MCLK VCO. If this VCO is
programmed to certain extremes, the time-out interval maybe too
short. C3=0, normal time-out. C3=1, doubled time-out interval.
Reserved, must be set to 0.
This bit adjusts the duty cycle. C1=0 causes a 1ns decrease in
output high time. C1=1 causes no adjustment. If the load
capacitance is high, the adjustment can bring the duty cycle closer
to 50%.
Reserved, must be set to 0.
Acts on register 2. NS2=0 prescales the N counter by 2.
NS2=1 prescales the P counter value to 4.
Acts on register 1. NS1=0 prescales the N counter by 2.
NS1=1 prescales the P counter value to 4.
Acts on register 0. NS0=0 prescales the P counter by 2.
NS0=1 prescales the P counter value to 4.
ICS82C404
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS82C404N | Dual Programmable Graphics Frequency Generator |
| ICS82C404XXCN16 | Peripheral IC |
| ICS82C404XXCW16 | Peripheral IC |
| ICS8302-01 | LOW SKEW, 1-TO-2 LVCMOS / LVTTL FANOUT BUFFER W/ COMPLEMENTARY OUTPUT |
| ICS8302AM-01 | LOW SKEW, 1-TO-2 LVCMOS / LVTTL FANOUT BUFFER W/ COMPLEMENTARY OUTPUT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS82C404N | 制造商:ICS 制造商全稱:ICS 功能描述:Dual Programmable Graphics Frequency Generator |
| ICS82C404XXCN16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| ICS82C404XXCW16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| ICS830154AGI-08LF | 制造商:Integrated Device Technology Inc 功能描述:IC FANOUT BUFFER 1.5V 1:4 8TSSOP 制造商:Integrated Device Technology Inc 功能描述:IC CLK BUFFER 1:4 160MHZ 8TSSOP |
| ICS830154AGI-08LFT | 制造商:Integrated Device Technology Inc 功能描述:IC FANOUT BUFFER 1.5V 1:4 8TSSOP 制造商:Integrated Device Technology Inc 功能描述:IC CLK BUFFER 1:4 160MHZ 8TSSOP |
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