參數(shù)資料
型號(hào)： ADSP-2101BPZ-100
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 45/64頁(yè)
文件大小： 0K
描述： IC DSP SLG 16BIT 25MHZ 68-PLCC
標(biāo)準(zhǔn)包裝： 1
系列： ADSP-21xx
類型： 定點(diǎn)
接口： 同步串行端口（SSP）
時(shí)鐘速率： 25MHz
非易失內(nèi)存： 外部
芯片上RAM： 6kB
電壓 - 輸入/輸出： 5.00V
電壓 - 核心： 5.00V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 68-LCC（J 形引線）
供應(yīng)商設(shè)備封裝： 68-PLCC（24.23x24.23）
包裝： 管件
產(chǎn)品目錄頁(yè)面： 738 (CN2011-ZH PDF)
ADSP-21xx
REV. B
–5–
Figure 1. ADSP-21xx Block Diagram
One bus grant execution mode (GO Mode) allows the ADSP-
21xx to continue running from internal memory. A second
execution mode requires the processor to halt while buses are
granted.
Each ADSP-21xx processor can respond to several different
interrupts. There can be up to three external interrupts,
configured as edge- or level-sensitive. Internal interrupts can be
generated by the timer, serial ports, and, on the ADSP-2111,
the host interface port. There is also a master RESET signal.
Booting circuitry provides for loading on-chip program memory
automatically from byte-wide external memory. After reset,
three wait states are automatically generated. This allows, for
example, a 60 ns ADSP-2101 to use a 200 ns EPROM as
external boot memory. Multiple programs can be selected and
loaded from the EPROM with no additional hardware.
The data receive and transmit pins on SPORT1 (Serial Port 1)
can be alternatively configured as a general-purpose input flag
and output flag. You can use these pins for event signalling to
and from an external device. The ADSP-2111 has three
additional flag outputs whose states are controlled through
software.
A programmable interval timer can generate periodic interrupts.
A 16-bit count register (TCOUNT) is decremented every n
cycles, where n–1 is a scaling value stored in an 8-bit register
(TSCALE). When the value of the count register reaches zero,
an interrupt is generated and the count register is reloaded from
a 16-bit period register (TPERIOD).
Serial Ports
The ADSP-21xx processors include two synchronous serial
ports (“SPORTs”) for serial communications and multiproces-
sor communication. All of the ADSP-21xx processors have two
serial ports (SPORT0, SPORT1) except for the ADSP-2105,
which has only SPORT1.
The serial ports provide a complete synchronous serial interface
with optional companding in hardware. A wide variety of
framed or frameless data transmit and receive modes of opera-
tion are available. Each SPORT can generate an internal
programmable serial clock or accept an external serial clock.
Each serial port has a 5-pin interface consisting of the following
signals:
Signal Name
Function
SCLK
Serial Clock (I/O)
RFS
Receive Frame Synchronization (I/O)
TFS
Transmit Frame Synchronization (I/O)
DR
Serial Data Receive
DT
Serial Data Transmit
The ADSP-21xx serial ports offer the following capabilities:
Bidirectional—Each SPORT has a separate, double-buffered
transmit and receive function.
Flexible Clocking—Each SPORT can use an external serial
clock or generate its own clock internally.
R Bus
16
DMD BUS
HOST
PORT
CONTROL
PMD BUS
DMA BUS
PMA BUS
14
24
16
EXTERNAL
ADDRESS
BUS
EXTERNAL
DATA
BUS
HOST
PORT
DATA
BOOT
ADDRESS
GENERATOR
TIMER
14
11
BUS
EXCHANGE
COMPANDING
CIRCUITRY
5
16
24
RECEIVE REG
TRANSMIT REG
SERIAL
PORT 1
EXTERNAL
HOST PORT
BUS
DMA BUS
PMA BUS
DMD BUS
PMD BUS
HOST INTERFACE PORT
(ADSP-2111 Only)
FLAGS
(ADSP-2111 Only)
3
PROGRAM
SEQUENCER
INSTRUCTION
REGISTER
PROGRAM
MEMORY
SRAM
or ROM
DATA
MEMORY
SRAM
DATA
ADDRESS
GENERATOR
#2
DATA
ADDRESS
GENERATOR
#1
14
INPUT REGS
OUTPUT REGS
SHIFTER
INPUT REGS
OUTPUT REGS
MAC
INPUT REGS
OUTPUT REGS
ALU
RECEIVE REG
TRANSMIT REG
SERIAL
PORT 0
(Not on ADSP-2105)
5
16
MUX
24
MUX
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