- 您现在的位置：买卖IC网 > PDF目录40940 > YKNIFEX4HW IC APEX 20KE FPGA 100K PDF资料下载
参数资料
| 型号： | YKNIFEX4HW |
| 英文描述： | IC APEX 20KE FPGA 100K |
| 中文描述： | 耶洛奈夫参考平台硬件设计手册 |
| 文件页数： | 14/24页 |
| 文件大小： | 186K |
| 代理商： | YKNIFEX4HW |
Yellowknife X4 Hardware Reference Manual
Page 20 /22
Motorola Inc.
Unrestricted Distribution Permitted
98 Feb 20
4.2 Permanent Jumpers
Permanent jumpers are implemented with zero-ohm resistors permanently soldered to the
motherboard to select certain congurations. To change these settings, these resistors
must be added, changed or removed. This is no normally done by the end-user.
4.2.1 Processor Drive Strength
These resistors are used to modify the drive strength of the processor. The standard setting
is “Normal” mode. Higher drive strengths can clear some problems but could cause oth-
ers.
4.2.2 Map Selection
This resistor is used to select the memory map used by the MPC106. The default is “Map
B” for CHRP compatibility.
4.2.3 Cache Size Selection
These jumpers are used to set the size of the cache installed. Because the cache SRAM is
soldered directly to the motherboard, changing the cache size is an involved operation.
Still, for completeness, here are the settings.
Table 10: CPU Drive Strength
R14
DS0
R38
DS1
Meaning
IN
CPU is tri-stated
IN
out
1X : Normal drive strength
out
IN
1.5X : Strong drive strength
out
2X : Herculean drive strength
Table 11: Map Selection
R10
Meaning
IN
Map “B”: CHRP
out
Map “A”: PREP
Table 12: Cache Size Conguration
R350
CRB
R351
CRA
R352
CRB
Cache
Size
out
IN
out
256K
IN
out
IN
512K
相关PDF资料 |
PDF描述 |
|---|---|
| YL001U2V2A1N | 4 & 6 Tumbler Camlocks |
| YL202EW030R | PULSE CAPACITORS FOR FLASH LAMP APPLICATIONS |
| YL202EW055R | PULSE CAPACITORS FOR FLASH LAMP APPLICATIONS |
| YL2LUR61D | T-3/4 SINGLE COLOR LED ARRAY, RED, 1.8 mm |
| YL352EW013R | PULSE CAPACITORS FOR FLASH LAMP APPLICATIONS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| YKP1568VG5 | 制造商:INTEGRAL 制造商全称:INTEGRAL 功能描述:8 - BIT MICROCONTROLLER FOR REMOTE CONTROL TRANSMITTERS |
| YKS1MNG1752A | 制造商:KYOCERA Corporation 功能描述:VOLT CONTROLLED OSCILLATORS |
| YKW-06 | 制造商:WELTREND 制造商全称:WELTREND 功能描述:Step-down Switching Controller |
| YL00132A2A1N | 制造商:C&K Components 功能描述:Switch Key Lock SPDT 90? Flat Key Panel Mount |
| YL00132A8A1N | 功能描述:键锁开关 SWITCHLOCK RoHS:否 制造商:C&K Components 触点形式:1 Form A (SPST-NO) 开关功能:Momentary 触点额定值: 电流额定值:100 mA 电压额定值 AC:250 VAC 端接类型:Through Hole 键类型:Keyswitch 变址: 位置数量:1 外壳材料: |
发布紧急采购，3分钟左右您将得到回复。