參數(shù)資料
型號: 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,;
文件頁數(shù): 63/89頁
文件大小: 379K
代理商: SAA7826HL
2003 Oct 01
63
Philips Semiconductors
Product specification
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
SAA7826
Table 43
sledge_pulse2 parameter: sledge pulse height;
RAM address 64H
Table 44
vel_parm1 parameter: gain constant for short
jump, integrator cross-over frequency during
jump; RAM address 1FH
Table 45
vel_parm2 parameter: time constant during
sledge access/actuator access, minimum jump
speed during short jump; RAM address 32H
sledge_pulse2
Hex
Pulse height
0111 1111
78
full-scale,
positive
....
....
40
0100 0000
half-scale,
positive
level = a/7F,
positive
zero
a
0000 0000
....
1000 0000
00
....
80
full-scale,
negative
vel_parm1
Hex
Gain constant
for short jump
K
v
0.1875
0.4375
0.6875
0.9375
1.1875
1.4375
1.6875
1.9375
2.1875
2.4375
2.6875
2.9375
3.1875
3.4375
3.6875
3.9375
Integrator
cross-over
frequency
during jump f
0
integrator hold
10.0/K
v
20.0/K
v
vel_prop
0000 xxxx
1000 xxxx
0100 xxxx
1100 xxxx
0010 xxxx
1010 xxxx
0110 xxxx
1110 xxxx
0001 xxxx
1001 xxxx
0101 xxxx
1101 xxxx
0011 xxxx
1011 xxxx
0111 xxxx
1111 xxxx
vel_int
0x
8x
4x
Cx
2x
Ax
6x
Ex
1x
9x
5x
Dx
3x
Bx
7x
Fx
xxxx 0000
xxxx 0001
xxxx 0010
x0
x1
x2
xxxx 0011
i
xxxx 1111
x3
30.0/K
v
i
×
10.0/K
v
150.0/K
v
xF
vel_parm2
Hex
Deceleration
time fast
actuator
steered ms
Deceleration
time sledge
steered ms
vel_setp
(binary)
0000 xxxx
1000 xxxx
0100 xxxx
1100 xxxx
0010 xxxx
1010 xxxx
0110 xxxx
1110 xxxx
0001 xxxx
1001 xxxx
0101 xxxx
1101 xxxx
0011 xxxx
1011 xxxx
0111 xxxx
1111 xxxx
vel_min
0x
8x
4x
Cx
2x
Ax
6x
Ex
1x
9x
5x
Dx
3x
Bx
7x
Fx
7.5
8.2
9
9.7
10.5
11.2
12.5
14
15.5
16.5
20.7
25
31.2
41
63
128
7.5
8.2
9
9.7
10.5
11.2
12.5
14
15.5
16.5
20.7
25
31.2
41
63
128
V
1
minimum jump speed
kHz
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
undefined
xxxx 0000
xxxx 0001
xxxx 0010
xxxx 0011
xxxx 0100
xxxx 0101
xxxx 0110
xxxx 0111
xxxx 1xxx
x0
x1
x2
x3
x4
x5
x6
x7
vel_parm1
Hex
Gain constant
for short jump
K
v
vel_prop
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