Datenblatt-Suchmaschine für elektronische Bauteile
  German  ▼
ALLDATASHEETDE.COM

X  

ADSP-2189NBCAZ-3202 Datenblatt(PDF) 8 Page - Analog Devices

Teilenummer ADSP-2189NBCAZ-3202
Bauteilbeschribung  DSP Microcomputer
Download  48 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADSP-2189NBCAZ-3202 Datenblatt(HTML) 8 Page - Analog Devices

Back Button ADSP-2189NBCAZ-3202 Datasheet HTML 4Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 5Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 6Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 7Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 8Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 9Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 10Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 11Page - Analog Devices ADSP-2189NBCAZ-3202 Datasheet HTML 12Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 48 page
background image
Rev. A
|
Page 8 of 48
|
August 2006
ADSP-218xN
Clock Signals
ADSP-218xN series members can be clocked by either a crystal
or a TTL-compatible clock signal.
The CLKIN input cannot be halted, changed during operation,
nor operated below the specified frequency during normal oper-
ation. The only exception is while the processor is in the power-
down state. For additional information, refer to the ADSP-218x
DSP Hardware Reference, for detailed information on this
power-down feature.
If an external clock is used, it should be a TTL-compatible signal
running at half the instruction rate. The signal is connected to
the processor’s CLKIN input. When an external clock is used,
the XTAL pin must be left unconnected.
ADSP-218xN series members use an input clock with a fre-
quency equal to half the instruction rate; a 40 MHz input clock
yields a 12.5 ns processor cycle (which is equivalent to
80 MHz). Normally, instructions are executed in a single pro-
cessor cycle. All device timing is relative to the internal instruc-
tion clock rate, which is indicated by the CLKOUT signal
when enabled.
Because ADSP-218xN series members include an on-chip oscil-
lator circuit, an external crystal may be used. The crystal should
be connected across the CLKIN and XTAL pins, with two
capacitors connected as shown in Figure 3. Capacitor values are
dependent on crystal type and should be specified by the crystal
manufacturer. A parallel-resonant, fundamental frequency,
microprocessor-grade crystal should be used. To provide an
adequate feedback path around the internal amplifier circuit,
place a resistor in parallel with the circuit, as shown in Figure 3.
A clock output (CLKOUT) signal is generated by the processor
at the processor’s cycle rate. This can be enabled and disabled by
the CLKODIS bit in the SPORT0 Autobuffer Control Register.
RESET
The RESET signal initiates a master reset of the ADSP-218xN.
The RESET signal must be asserted during the power-up
sequence to assure proper initialization. RESET during initial
power-up must be held long enough to allow the internal clock
to stabilize. If RESET is activated any time after power-up, the
clock continues to run and does not require stabilization time.
The power-up sequence is defined as the total time required for
the crystal oscillator circuit to stabilize after a valid VDD is
applied to the processor, and for the internal phase-locked loop
(PLL) to lock onto the specific crystal frequency. A minimum of
2000 CLKIN cycles ensures that the PLL has locked, but does
not include the crystal oscillator start-up time. During this
power-up sequence the RESET signal should be held low. On
any subsequent resets, the RESET signal must meet the mini-
mum pulse-width specification (tRSP).
The RESET input contains some hysteresis; however, if an RC
circuit is used to generate the RESET signal, the use of an exter-
nal Schmitt trigger is recommended.
The master reset sets all internal stack pointers to the empty
stack condition, masks all interrupts, and clears the MSTAT
register. When RESET is released, if there is no pending bus
request and the chip is configured for booting, the boot-loading
sequence is performed. The first instruction is fetched from on-
chip program memory location 0x0000 once boot loading
completes.
POWER SUPPLIES
ADSP-218xN series members have separate power supply con-
nections for the internal (VDDINT) and external (VDDEXT) power
supplies. The internal supply must meet the 1.8 V requirement.
The external supply can be connected to a 1.8 V, 2.5 V, or 3.3 V
supply. All external supply pins must be connected to the same
supply. All input and I/O pins can tolerate input voltages up to
3.6 V, regardless of the external supply voltage. This feature pro-
vides maximum flexibility in mixing 1.8 V, 2.5 V, or 3.3 V
components.
Figure 3. External Crystal Connections
CL KIN
CL KO UT
XT A L
DS P
1M


Ähnliche Teilenummer - ADSP-2189NBCAZ-3202

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Analog Devices
ADSP-2189NBCAZ-3202 AD-ADSP-2189NBCAZ-3202 Datasheet
1Mb / 48P
   DSP Microcomputer
REV. A
ADSP-2189NBCAZ-3202 AD-ADSP-2189NBCAZ-3202 Datasheet
1Mb / 48P
   DSP Microcomputer
REV. A
More results

Ähnliche Beschreibung - ADSP-2189NBCAZ-3202

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Analog Devices
ADSP-2185L AD-ADSP-2185L Datasheet
223Kb / 31P
   DSP Microcomputer
ADSP-2186M AD-ADSP-2186M Datasheet
288Kb / 40P
   DSP Microcomputer
REV. 0
ADSP-2183 AD-ADSP-2183 Datasheet
252Kb / 31P
   DSP Microcomputer
REV. C
ADSP-2184 AD-ADSP-2184 Datasheet
213Kb / 31P
   DSP Microcomputer
REV. 0
ADSP-2184L AD-ADSP-2184L Datasheet
216Kb / 31P
   DSP Microcomputer
REV. 0
ADSP-2184 AD-ADSP-2184_15 Datasheet
216Kb / 31P
   DSP Microcomputer
REV. 0
ADSP-2185 AD-ADSP-2185_15 Datasheet
291Kb / 32P
   DSP Microcomputer
REV. 0
ADSP-2189M AD-ADSP-2189M_15 Datasheet
244Kb / 32P
   DSP Microcomputer
REV. A
ADSP-21065L AD-ADSP-21065L Datasheet
488Kb / 44P
   DSP Microcomputer
REV. C
ADSP-2186BSTZ-160 AD-ADSP-2186BSTZ-160 Datasheet
261Kb / 36P
   DSP Microcomputer
REV. B
ADSP-2184BSTZ-160 AD-ADSP-2184BSTZ-160 Datasheet
216Kb / 31P
   DSP Microcomputer
REV. 0
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48


Datenblatt Download

Go To PDF Page


Link URL




Privatsphäre und Datenschutz
ALLDATASHEETDE.COM
War ALLDATASHEET hilfreich?  [ DONATE ] 

Über Alldatasheet   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Linktausch   |   Hersteller
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com