參數(shù)資料
型號: PCA1070T
廠商: NXP SEMICONDUCTORS
元件分類: 通信及網(wǎng)絡
英文描述: Multistandard programmable analog CMOS transmission IC
中文描述: SPECIALTY TELECOM CIRCUIT, PDSO24
文件頁數(shù): 13/36頁
文件大?。?/td> 180K
代理商: PCA1070T
1997 Jun 20
13
Philips Semiconductors
Product specification
Multistandard programmable analog
CMOS transmission IC
PCA1070
Table 10
Programming R
b
Notes
1.
For Z
set
combinations where R
a
= 0 only R
b
= 600
is allowed. If R
a
500
it is obligatory that R
b
= 0. This is to
safeguard stable operation of the line interface under all practical conditions. If Z
ref
requires R
a
= 0 and R
b
600
use R
a
= 100
instead and reduce the original R
b
by 100
.
X = don’t care.
2.
Table 11
Programming pole frequency:
Notes
1.
2.
X = don’t care.
Reset functions
Monitoring of internal reset PCA1070.
Table 12
Status bit PRES
ZSB2
ZSB1
ZSB0
R
b
(
)
0
600
700
800
900
1000
REMARK
0
0
0
0
1
1
0
0
1
1
X
X
0
1
0
1
0
1
note 1
default
note 2
note 2
ZSP3
ZSP2
ZSP1
ZSP0
f
p
(Hz)
CORRESPONDING VALUE OF C (nF)
(1)
REMARK
R
b
(600
)
320
242
183
139
105
79
60
45
22
R
b
(700
)
275
207
157
119
90
68
51
39
19
R
b
(800
)
240
182
137
104
79
59
45
34
17
R
b
(900
)
214
161
122
92
70
53
40
30
15
R
b
(1000
)
192
145
110
83
63
48
36
27
13
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
1
1
X
0
0
1
1
0
0
1
1
X
0
1
0
1
0
1
0
1
X
828
1095
1448
1915
2533
3350
4430
5859
12000
default
note 2
PRES
DESCRIPTION
1
0
internal reset has occurred; default values in all registers
register has been read via the I
2
C-bus interface
C
R
b
π
f
p
×
×
2
=
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