參數(shù)資料
型號： SAA7826
廠商： NXP Semiconductors N.V.
英文描述： CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control
中文描述： CD音頻解碼器，數(shù)字伺服和濾波器DAC，具有集成前置放大器和激光控制
文件頁數(shù)： 25/89頁
文件大小： 379K
代理商： SAA7826
2003 Oct 01
25
Philips Semiconductors
Product specification
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
SAA7826
Table 11
Pin applications
PIN
NAME
PIN
NUMBER
TYPE
REGISTER
ADDRESS
REGISTER
DATA
FUNCTION
V1
71
input
1100
XXX1
XXX0
external off-track signal input
internal off-track signal used input may be read
via decoder status bit; selected via register 2
input may be read via decoder status bit;
selected via register 2
output = 0
output = 1
4-line motor drive (using V4 and V5)
Q-to-W subcode output
output = 0
output = 1
de-emphasis output (active HIGH)
output = 0
output = 1
V2
72
input
V3
73
output
1100
1101
1101
00XX
01XX
0000
XX01
XX10
XX11
01XX
10XX
11XX
V4
74
output
V5
75
output
7.15
Spindle motor control
7.15.1
M
OTOR OUTPUT MODES
The spindle motor speed is controlled by a fully integrated
digital servo. Address information from the internal
±
8 frame FIFO and disc speed information are used to
calculate the motor control output signals. Several output
modes, selected by decoder register 6, are supported:
Pulse density, 2-line (true complement output),
(1
×
n) MHz sample frequency
PWM output, 2-line, (22.05
×
n) kHz modulation
frequency
PWM output, 4-line, (22.05
×
n) kHz modulation
frequency
CDV motor mode.
7.15.1.1
Pulse density output mode
In the pulse density mode the motor output pin (MOTO1)
is the pulse density modulated motor output signal.
A 50% duty factor corresponds with the motor not
actuated, higher duty factors mean acceleration, lower
duty factors means braking. In this mode, the MOTO2
signal is the inverse of the MOTO1 signal. Both signals
change state only on the edges of a (1
×
n) MHz internal
clock signal.
7.15.1.2
PWM output mode (2-line)
In the PWM mode the motor acceleration signal is put in
pulse-width modulation form on the MOTO1 output. The
motor braking signal is pulse-width modulated on the
MOTO2 output. The timing is illustrated in Fig 16. A typical
application diagram is illustrated in Fig 17.
trep
μ
s
tdead
Accelerate
Brake
MOTO1
MOTO2
MGA366
Fig.16 2-line PWM mode timing.
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參數(shù)描述
SAA7826HL 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control
SAA7826HL/E/M1A 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC PHONIC AUTO RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
SAA7826HL/E/M1A,55 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC PHONIC AUTO RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
SAA7826HL/M1A 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC PHONIC AUTO RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
SAA7826HL/M1A,557 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC PHONIC AUTO RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
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