欢迎访问ic37.com |
会员登录 免费注册
发布采购

ISPGDX160VA-3Q208 参数 Datasheet PDF下载

ISPGDX160VA-3Q208图片预览
型号: ISPGDX160VA-3Q208
PDF下载: 下载PDF文件 查看货源
内容描述: 在系统可编程3.3V通用数字CrosspointTM [In-System Programmable 3.3V Generic Digital CrosspointTM]
分类和应用:
文件页数/大小: 37 页 / 463 K
品牌: LATTICE [ LATTICE SEMICONDUCTOR ]
 浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第21页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第22页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第23页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第24页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第26页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第27页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第28页浏览型号ISPGDX160VA-3Q208的Datasheet PDF文件第29页  
Specifications ispGDX160V/VA  
In-System Programmability  
All necessary programming of the ispGDXV/VA is done when the pin is left unconnected, in which case the pin is  
via four TTL level logic interface signals. These four pulled high by the permanent internal pullup. This allows  
signals are fed into the on-chip programming circuitry ISP programming and BSCAN testing to take place as  
where a state machine controls the programming.  
specified by the Instruction Table.  
On-chip programming can be accomplished using an When the pin is driven low, the JTAG TAP controller is  
IEEE 1149.1 boundary scan protocol. The IEEE 1149.1- driven to a reset state asynchronously. It stays there  
compliant interface signals are Test Data In (TDI), Test while the pin is held low. After pulling the pin high the  
Data Out (TDO), Test Clock (TCK) and Test Mode Select JTAG controller becomes active. The intent of this fea-  
(TMS) control. The EPEN pin is also used to enable or tureistoallowtheJTAGinterfacetobedirectlycontrolled  
disable the JTAG port.  
by the data bus of an embedded controller (hence the  
name Embedded Port Enable). The EPEN signal is used  
as a device selectto prevent spurious programming  
and/or testing from occuring due to random bit patterns  
on the data bus. Figure 9 illustrates the block diagram for  
the ispJTAG interface.  
The embedded controller port enable pin (EPEN) is used  
to enable the JTAG tap controller and in that regard has  
similar functionality to a TRST pin. When the pin is driven  
high,theJTAGTAPcontrollerisenabled.Thisisalsotrue  
Figure 9. ispJTAG Device Programming Interface  
TDO  
TDI  
ispJTAG  
Programming  
Interface  
TMS  
TCK  
EPEN  
ispGDX  
ispLSI  
ispGDX  
160V/VA  
Device  
ispGDX  
160V/VA  
Device  
ispMACH  
Device  
160V/VA  
Device  
Device  
25  
 复制成功!