參數(shù)資料
型號(hào)： SAA7826HL
廠商： NXP Semiconductors N.V.
元件分類： DRAM
英文描述： CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control
封裝： SAA7826HL/M1AS/S5<SOT315-1 (LQFP80)|<<http://www.nxp.com/packages/SOT315-1.html<1<Always Pb-free,;
文件頁(yè)數(shù)： 10/89頁(yè)
文件大小： 379K
代理商： SAA7826HL
2003 Oct 01
10
Philips Semiconductors
Product specification
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
SAA7826
7.2.4
S
TANDBY MODES
The SAA7826 can be placed in two standby modes,
selected by decoder register B (it should be noted that the
device core is still active):
Standby 1: CD STOP mode; most I/O functions are
switched off
Standby 2: CD PAUSE mode; audio output features are
switched off, but the motor loop, the motor output and
the subcode interfaces remain active; this is also called
a ‘Hot Pause’.
In the standby modes the various pins will have the
following values:
MOTO1 and MOTO2: put in to high-impedance, PWM
mode (Standby 1 and RESET: operating in Standby 2);
put in high-impedance, PDM mode (Standby 1 and
RESET: operating in Standby 2)
Pins SCL and SDA: no interaction; normal operation
continues
Pins SCLK, WCLK, DATA, EF and DOBM: 3-state in
both standby modes; normal operation continues after
reset
Pins OSCIN, OSCOUT, CLK16 and CLK4/12: no
interaction; normal operation continues
Pins V1 to V5 and CFLAG: no interaction; normal
operation continues.
Table 1
Playback speeds
7.3
Crystal oscillator
The crystal oscillator is a conventional 2-pin design which
can also operate with ceramic resonators. The external
componentsusedaroundthecrystalareillustratedinFig.4
together with component values (C1 and C2) for a given
crystaltypeinTable 2.Theoscillatorfrequencythatcanbe
used with the SAA7826 is 8.4672 MHz.
REGISTER B
REGISTER E
f
xtal
= 8.4672 MHz
n = 1
n = 2; voltage
mode only
n = 4; voltage
mode only
0XXX
1XXX
0XXX
0XXX
0XXX
1XXX
handbook, halfpage
SAA7826
OSCILLATOR
XTAL
OSCOUT
OSCIN
C2
C1
MBL740
Fig.4 Crystal configuration.
Table 2
External capacitor selection based upon the crystal type
CRYSTAL LOAD
CAPACITANCE (C
L
)
MAXIMUM SERIES
CRYSTAL RESISTANCE
(R
S
)
EXTERNAL LOAD CAPACITORS
8 MHz
<300
<300
<300
C1
C2
10 pF
20 pF
30 pF
8 pF
27 pF
47 pF
8 pF
27 pF
47 pF
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SAA7826HL/M1AS/S5, 制造商:NXP Semiconductors 功能描述:- Tape and Reel 制造商:NXP Semiconductors 功能描述:DSP
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