欢迎访问ic37.com |
会员登录 免费注册
发布采购

TMS320VC5416ZGU160 参数 Datasheet PDF下载

TMS320VC5416ZGU160图片预览
型号: TMS320VC5416ZGU160
PDF下载: 下载PDF文件 查看货源
内容描述: TMS320VC5416定点数字信号处理器 [TMS320VC5416 Fixed-Point Digital Signal Processor]
分类和应用: 微控制器和处理器外围集成电路数字信号处理器装置时钟
文件页数/大小: 98 页 / 855 K
品牌: TI [ TEXAS INSTRUMENTS ]
 浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第23页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第24页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第25页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第26页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第28页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第29页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第30页浏览型号TMS320VC5416ZGU160的Datasheet PDF文件第31页  
TMS320VC5416  
Fixed-Point Digital Signal Processor  
www.ti.com  
SPRS095OMARCH 1999REVISED JANUARY 2005  
3.7.1 Enhanced 8-/16-Bit Host-Port Interface (HPI8/16)  
The host-port interface, also referred to as the HPI8/16, is an enhanced version of the standard 8-bit HPI  
found on earlier TMS320C54x™ DSPs (542, 545, 548, and 549). The HPI can be used to interface to an  
8-bit or 16-bit host. When the address and data buses for external I/O is not used (to interface to external  
devices in program/data/IO spaces), the HPI can be configured as an HPI16 to interface to a 16-bit host.  
This configuration can be accomplished by connecting the HPI16 pin to logic "1”.  
When the HPI16 pin is connected to a logic ,,0”, the HPI is configured as an HPI8. The HPI8 is an 8-bit  
parallel port for interprocessor communication. The features of the HPI8 include:  
Standard features:  
Sequential transfers (with autoincrement) or random-access transfers  
Host interrupt and C54x™ interrupt capability  
Multiple data strobes and control pins for interface flexibility  
The HPI8 interface consists of an 8-bit bidirectional data bus and various control signals. Sixteen-bit  
transfers are accomplished in two parts with the HBIL input designating high or low byte. The host  
communicates with the HPI8 through three dedicated registers — the HPI address register (HPIA), the  
HPI data register (HPID), and the HPI control register (HPIC). The HPIA and HPID registers are only  
accessible by the host, and the HPIC register is accessible by both the host and the device.  
Enhanced features:  
Access to entire on-chip RAM through DMA bus  
Capability to continue transferring during emulation stop  
The HPI16 is an enhanced 16-bit version of the TMS320C54x™ DSP 8-bit host-port interface (HPI8). The  
HPI16 is designed to allow a 16-bit host to access the DSP on-chip memory, with the host acting as the  
master of the interface. Some of the features of the HPI16 include:  
16-bit bidirectional data bus  
Multiple data strobes and control signals to allow glueless interfacing to a variety of hosts  
Only nonmultiplexed address/data modes are supported  
18-bit address bus used in nonmultiplexed mode to allow access to all internal memory (including  
internal extended address pages)  
HRDY signal to hold off host accesses due to DMA latency  
The HPI16 acts as a slave to a 16-bit host processor and allows access to the on-chip memory of the  
DSP.  
NOTE  
Only the nonmultiplexed mode is supported when the HPI is configured as a HPI16.  
The HPI functions as a slave and enables the host processor to access the on-chip memory. A major  
enhancement to the HPI over previous versions is that it allows host access to the entire on-chip memory  
range of the DSP. The host and the DSP both have access to the on-chip RAM at all times and host  
accesses are always synchronized to the DSP clock. If the host and the DSP contend for access to the  
same location, the host has priority, and the DSP waits for one cycle. Note that since host accesses are  
always synchronized to the device clock, an active input clock (CLKIN) is required for HPI accesses during  
IDLE states, and host accesses are not allowed while the device reset pin is asserted.  
Functional Overview  
27