參數(shù)資料
型號: MC145443P
廠商: MOTOROLA INC
元件分類: 調制器/解調器
英文描述: Single-Chip 300-Baud Modem
中文描述: 0.3 kbps DATA, MODEM, PDIP20
封裝: PLASTIC, DIP-20
文件頁數(shù): 7/12頁
文件大小: 224K
代理商: MC145443P
MC145442
MC145443
MOTOROLA
7
15
16
11
RxA2
RxA1
TxD
+
AAF
S/H
MODULATOR
LOW–BAND
BPF
HIGH–BAND
BPF
AC
AMP
SMOOTHING
FILTER
CARRIER
DETECT
DEMOD
+
3
5
1
17
18
CD
RxD
DSI
TxA
Exl
(a) Originate/Channel 1 Mode (MODE = High, LB = Low)
(b) Answer/Channel 2 Mode (MODE = Low, LB = Low)
15
16
11
RxA2
RxA1
TxD
+
AAF
S/H
MODULATOR
LOW–BAND
BPF
HIGH–BAND
BPF
AC
AMP
SMOOTHING
FILTER
CARRIER
DETECT
DEMOD
+
3
5
1
17
18
CD
RxD
DSI
TxA
Exl
15
16
11
RxA2
RxA1
TxD
+
AAF
S/H
MODULATOR
LOW–BAND
BPF
HIGH–BAND
BPF
AC
AMP
SMOOTHING
FILTER
CARRIER
DETECT
DEMOD
+
3
5
1
17
18
CD
RxD
DSI
TxA
Exl
(c) Originate/Channel 1 Mode and Analog Loopback State (MODE = High, LB = Low)
+
AAF
S/H
MODULATOR
LOW–BAND
BPF
HIGH–BAND
BPF
AC
AMP
SMOOTHING
FILTER
CARRIER
DETECT
DEMOD
+
3
5
1
17
18
CD
RxD
DSI
TxA
Exl
15
16
11
RxA2
RxA1
TxD
(d) Answer/Channel 2 Mode and Analog Loopback State (MODE = Low, LB = Low)
Figure 4. Basic Operating Modes
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