參數(shù)資料
型號(hào): TMS320LC57S
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號(hào)處理
英文描述: Digital Signal Processors(35/50ns指令周期,并行邏輯單元,可編程PLL,全雙工同步串行口的DSP)
中文描述: 數(shù)字信號(hào)處理器(35/50ns指令周期,并行邏輯單元,可編程鎖相環(huán),全雙工同步串行口的數(shù)字信號(hào)處理器)
文件頁(yè)數(shù): 10/87頁(yè)
文件大小: 1864K
代理商: TMS320LC57S
TMS320C5x, TMS320LC5x
DIGITAL SIGNAL PROCESSORS
SPRS030A – APRIL 1995 – REVISED APRIL 1996
10
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
Pin Functions for Devices in the PZ Package
SIGNAL
TYPE
DESCRIPTION
PARALLEL INTERFACE BUS
A0–A15
I/O/Z
16-bit external address bus (MSB: A15, LSB: A0)
D0–D15
I/O/Z
16-bit external data bus (MSB: D15, LSB: D0)
PS, DS, IS
O/Z
Program, data, and I/O space select outputs, respectively
STRB
I/O/Z
Timing strobe for external cycles and external DMA
R/W
I/O/Z
Read/write select for external cycles and external DMA
RD, WE
O/Z
Read and write strobes, respectively, for external cycles
READY
I
External bus ready/wait-state control input
BR
I/O/Z
Bus request. Arbitrates global memory and external DMA
SYSTEM INTERFACE/CONTROL SIGNALS
RS
I
Reset. Initializes device and sets PC to zero
MP/MC
I
Microprocessor/microcomputer mode select. Enables internal ROM
HOLD
I
Puts parallel I/F bus in high-impedance state after current cycle
HOLDA
O/Z
Hold acknowledge. Indicates external bus in hold state
XF
O/Z
External flag output. Set/cleared through software
BIO
I
I/O branch input. Implements conditional branches
TOUT
O/Z
Timer output signal. Indicates output of internal timer
INT1–INT4
I
External interrupt inputs
NMI
I
Nonmaskable external interrupt
SERIAL PORT INTERFACE
DR, DR1, DR2
I
Serial receive-data input
DX, DX1, DX2
O/Z
Serial transmit-data output. In high-impedance state when not transmitting
CLKR, CLKR1, CLKR2
I
Serial receive-data clock input
CLKX, CLKX1, CLKX2
I/O/Z
Serial transmit-data clock. Internal or external source
FSR, FSR1, FSR2
I
Serial receive-frame-synchronization input
FSX, FSX1, FSX2
I/O/Z
Serial transmit-frame-synchronization signal. Internal or external source
BUFFERED SERIAL PORT (BSP) (SEE NOTE 1)
BSP receive data input
BSP transmit data output; in high-impedance state when not transmitting
BSP receive-data clock input
BSP transmit-data clock; internal or external source
BSP receive frame-synchronization input
BSP transmit frame-synchronization signal; internal or external source
BDR
BDX
BCLKR
BCLKX
BFSR
BFSX
LEGEND:
I =
O =
Z =
NOTE 1: ’LC56 devices only
I
O/Z
I
I/O/Z
I
I/O/Z
Input
Output
High impedance
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