參數(shù)資料
型號： TMS320LC541-66
元件分類： 數(shù)字信號處理
英文描述： Digital Signal Processor
中文描述： 數(shù)字信號處理器
文件頁數(shù)： 16/111頁
文件大?。?/td> 1426K
代理商： TMS320LC541-66
TMS320C54x, TMS320LC54x, TMS320VC54x
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SPRS039C – FEBRUARY 1996 – REVISED DECEMBER 1999
16
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
’54x Signal Descriptions (Continued)
TERMINAL
NAME
DESCRIPTION
TYPE
IEEE1149.1 TEST PINS
TCK
I
IEEE standard 1149.1 test clock. Pin with internal pullup device. This is normally a free-running clock signal with
a 50% duty cycle. The changes on the test-access port (TAP) of input signals TMS and TDI are clocked into the
TAP controller, instruction register, or selected test data register on the rising edge of TCK. Changes at the TAP
output signal (TDO) occur on the falling edge of TCK.
TDI
I
IEEE standard 1149.1 test data input. Pin with internal pullup device. TDI is clocked into the selected register
(instruction or data) on a rising edge of TCK.
TDO
O/Z
IEEE standard 1149.1 test data output. The contents of the selected register (instruction or data) is shifted out
of TDO on the falling edge of TCK. TDO is in the high-impedance state except when the scanning of data is in
progress. TDO also goes into the high-impedance state when EMU1/OFF is low.
TMS
I
IEEE standard 1149.1 test mode select. Pin with internal pullup device. This serial control input is clocked into
the TAP controller on the rising edge of TCK.
TRST
I
IEEE standard 1149.1 test reset. TRST, when high, gives the IEEE standard 1149.1 scan system control of the
operations of the device. If TRST is not connected or driven low, the device operates in its functional mode, and
the IEEE standard 1149.1 signals are ignored. Pin with internal pulldown device.
EMU0
I/O/Z
Emulator interrupt 0 pin. When TRST is driven low, EMU0 must be high for the activation of the EMU1/OFF
condition. When TRST is driven high, EMU0 is used as an interrupt to or from the emulator system and is defined
as input/output by way of IEEE standard 1149.1 scan system.
EMU1/OFF
I/O/Z
Emulator interrupt 1 pin/disable all outputs. When TRST is driven high, EMU1/OFF is used as an interrupt to or
from the emulator system and is defined as input/output by way of IEEE standard 1149.1 scan system. When
TRST is driven low, EMU1/OFF is configured as OFF. The EMU1/OFF signal, when active low, puts all output
drivers into the high-impedance state. Note that OFF is used exclusively for testing and emulation purposes (not
for multiprocessing applications). Therefore, for the OFF condition, the following conditions apply:
TRST = low,
EMU0 = high
EMU1/OFF = low
DEVICE TEST PIN
TEST1
I
Test1 – Reserved for internal use only (’LC548, ’LC549, and ’VC549 only).
This pin must not be connected
(NC).
I = Input, O = Output, Z = High impedance
architecture
The ’54x DSPs use an advanced, modified Harvard architecture that maximizes processing power by
maintaining three separate bus structures for data memory and one for program memory. Separate program
and data spaces allow simultaneous access to program instructions and data, providing a high degree of
parallelism. For example, two read and one write operations can be performed in a single cycle. Instructions
with parallel store and application-specific instructions fully utilize this architecture. In addition, data can be
transferred between data and program spaces. Such parallelism supports a powerful set of arithmetic, logic,
and bit-manipulation operations that can all be performed in a single machine cycle. In addition, the ’54x include
the control mechanisms to manage interrupts, repeated operations, and function calls.
The functional block diagram includes the principal blocks and bus structure in the ’54x devices.
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TMS320LC541PZ2-40 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC Dig Signal Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
TMS320LC542PBK1-50 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC Dig Signal Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
TMS320LC542PBK2-50 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC Dig Signal Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
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