參數(shù)資料
型號(hào)： TMX320VC5421
廠商： Texas Instruments, Inc.
元件分類： 數(shù)字信號(hào)處理
英文描述： DIGITAL SIGNAL PROCESSOR
中文描述： 數(shù)字信號(hào)處理器
文件頁(yè)數(shù)： 18/88頁(yè)
文件大小： 1156K
代理商： TMX320VC5421
TMS320VC5421
DIGITAL SIGNAL PROCESSOR
SPRS098 – DECEMBER 1999
18
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
on-chip single-access RAM (SARAM)
The ’5421 subsystems A and B each have 32K 16-bit words of on-chip SARAM (4 blocks of 8K words). Each
of these SARAM blocks can be accessed once per machine cycle. This memory is intended to store data values
only. At reset, the SARAM is disabled. The SARAM can be enabled in data memory space by setting the DROM
bit in the PMST register.
on-chip shared RAM (DARAM)
The ’5421 has 128K 16-bit words of on-chip DARAM (16 blocks of 8K words) that is shared between the two
DSP subsystems. This memory is intended to store program only. Each subsystem is able to make one
instruction fetch from any location in shared memory each cycle. Neither subsystem CPU can write to the shared
memory as only the DMA can write to shared memory.
on-chip boot ROM
The ’5421 subsystems A and B each have 2K 16-bit words of on-chip ROM. This ROM is used for bootloading
functions only. Enabling the ROM maps out one 8K-word block of the shared program memory. The ROM can
be disabled by clearing bit 7 (ROMEN) of the general-purpose I/O (GPIO) register. Table 1 shows the
XIO/ROMEN modes. The ROM is enabled or disabled at reset for each subsystem depending on the state of
the GPIO0 pin for that subsystem.
Table 1. XIO/ROMEN Modes
XIO
ROMEN/GPIO0
MODE
0
x
Fetch internal from RAM
1
0
Fetch external
1
1
ROM enabled
extended program memory
The program memory space on the ’5421 device addresses up to 512K 16-bit words. The ’5421 device uses
a paged extended memory scheme in program space to allow access of up to 512K of program memory . This
extended program memory (each subsystem) is organized into eight pages (0–7), pages 0–3 are internal,
pages 4–7 are external, each 64K in length. (Pages 8–127 as defined by the program counter extension register
(XPC) are aliases for pages 4–7.) Access to the extended program memory is similar to the ’5420. To implement
the extended program memory scheme, the ’5421 device includes the following feature:
Two ’54x instructions are extended to use the additional two bits in the ’5421 device.
–
–
READA – Read program memory addressed by accumulator A and store in data memory
WRITA – Write data to program memory addressed by accumulator A
(Writes not allowed for CPUs to shared program memory)
program memory
The program memory is accessible on multiple pages, depending on the XPC value. Within these pages,
memory is accessible, depending on the address range.
Access in the lower 32K of each page is dependent on the state of OVLY.
–
–
OVLY = 0 – Program memory is accessed externally for all values of XPC.
OVLY = 1 – Program memory is accessed from local data/program DARAM for all values of XPC.
Access in the upper 32K of each page is dependent on the state of MP/MC and the value of XPC.
–
MP/MC = 0 – Program memory is accessed internally from shared DARAM for XPC = 0–3. Program
memory is accessed externally for XPC = 4–127.
MP/MC = 1 – Program memory is accessed externally for all values of XPC.
–
A
相關(guān)PDF資料
PDF描述
TMX320VC5509AGHH TMS320VC5509A Fixed-Point Digital Signal Processor
TMX470R1A64PN 16/32-Bit RISC Flash Microcontroller
TMXT504 SAW BANDPASS FILTER
TN0104 N-Channel Enhancement-Mode Vertical DMOS FET(擊穿電壓40V，低門限1.6V，N溝道增強(qiáng)型垂直DMOS結(jié)構(gòu)場(chǎng)效應(yīng)管)
TN0104 N-Channel Enhancement-Mode Vertical DMOS FETs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMX320VC5441GGU 制造商:Texas Instruments 功能描述:
TMX320VC5472GHK 功能描述:IC DIGITAL SYSTEM PROCESSOR RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號(hào)處理器） 系列:- 標(biāo)準(zhǔn)包裝:2 系列:StarCore 類型:SC140 內(nèi)核 接口:DSI，以太網(wǎng)，RS-232 時(shí)鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:431-FCPBGA（20x20） 包裝:托盤
TMX320VC549GGU100 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
TMX320VC549PGE-100 制造商:Texas Instruments 功能描述:320VC549PGE-100
TMX320VC5501GZZ300 制造商:Texas Instruments 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*