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ST75C520 数据表(PDF) 44 Page - STMicroelectronics

部件名 ST75C520
功能描述  HIGH SPEED FAX MODEM DATA PUMP
PDF  45 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST75C520 数据表(HTML) 44 Page - STMicroelectronics

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TYPICAL APPLICATION
D0
D1
D2
D3
D4
D5
D6
D7
DTACKl
INTRl
CSl
SR/W (WRl)
S DSl (RDl)
A0
A1
A2
A3
A4
A5
A6
RESE Tl
+5V
+5V
R8
470
Ω
R7
10k
Ω
+5V
***
10
µF
C12
10nF
C13
10nF
C14
10nF
+5V
INTEL mo de
MOTOROLA mo de
(select one
of the two)
RINGl
CTSl
RTSl
CDl
CLK
RxD
TxD
TP1
TP2
(connec t close
to the ST75C52)
V.24/RS232
R6
1.2k
Ω
R5
1.2k
Ω
R4
1.2k
Ω
R3
1.2k
Ω
*
C8
100nF
*
C9
100nF
C11
1
µF
C10
1
µF
C7
2.2
µF
C6
2.2
µF
*
*
VCM
RXA2
RXA1
TXA2
TXA1
AGND
R2 1.2k
Ω
R1 1.2k
Ω
C4
100 nF
*
C5
10
µF
+5VA
+5V
C3
10nF
C1
5pF
29.4912MHz
Y1
L1 1
µH
C2
33pF
(t hird harmonic series
res onance oscillator)
DAA
30
37
38
31
32
33
43
56
49
55
50
53
45
2
51
1
42
44
60
54
61
48
47
62
46
26
27
28
58
63
57
59
29
36
35
34
39
17
18
19
22
23
52
9
25
40
24
8
3
10
12
11
13
15
14
16
5
4
6
7
64
SCCLK
EOS
BOS
RDYS
SCOUT
SCIN
MCI
CLKOUT
MC0
MC1
MC2
SD0
SD1
SD2
SD3
SD4
SD5
SD6
SD7
SDTACK
SINTR
SCS
SR/W
SDS
INT/MOT
SA0
SA1
SA2
SA3
SA4
SA5
SA6
RESET
DV DD
20
21
41
DV DD
DV DD
EXTAL
XTAL
HALT/NOP
TXA1
TXA2
RXA1
RXA2
VCM
REFN
AGNDR
V
REFP
V
AV
DD
AGNDT
EYEX
EYEY
EYESYNC
EYECLK
TXD
CLK
RXD
CD
RTS
CTS
RING
EBS
DGND
DGND
DGND
Notes : All capacitor with a ”*” must be implanted close to the ST75C520 pin.
All signal name ending with a ”1” are active low.
R3, R4, R5, R6 are needed if the hybrid will sink a current on VCM.
ST75C520
44/45



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