參數(shù)資料
型號(hào): PEF24902
英文描述: ISDN Line Interface
中文描述: ISDN線路接口
文件頁(yè)數(shù): 18/73頁(yè)
文件大小: 1618K
代理商: PEF24902
PEB 2466
PEF 2466
Pin Descriptions
Hardware Reference Manual
9
2001-02-20
54
GNDA2
I
Analog Ground, Channel 2
Not internally connected to GNDD or GNDA 1,3,4.
Analog
Voice (Voltage) Input
,
Channel 2
Requires a coupling capacitor >39 nF to the SLIC.
Reference Voltage
Must connect to a 220 nF cap. to ground.
Analog Supply Reference Voltage
+5 V (100 nF blocking capacitor required).
Analog Voice (Voltage) Input, Channel 3
Requires a coupling capacitor >39 nF to the SLIC.
Analog Ground, Channel 3
Not internally connected to GNDD or GNDA1,2,4.
Analog Voice (Voltage) Output, Channel 3
Requires a coupling capacitor to the SLIC. The capacitor
value depends on the SLIC
s input impedance.
(See Chapter
5.1 Analog Interface
)
Analog Supply Voltage, Channels 3 and 4
+5 V (100 nF blocking capacitor required).
Analog Voice (Voltage) Output, Channel 4
Requires a coupling capacitor to the SLIC. The capacitor
value depends on the SLIC
s input impedance.
(See Chapter
5.1 Analog Interface
)
Analog Ground, Channel 4
Not internally connected to GNDD or GNDA1,2,3.
Analog Voice (Voltage) Input
,
Channel 4
Requires a coupling capacitor >39 nF to the SLIC.
2
55
V
IN2
I
2
56
V
REF
I/O
all
57
V
DDREF
I
all
58
V
IN3
I
3
59
GNDA3
I
3
60
V
OUT3
O
3
61
V
DDA34
I
3
62
V
OUT4
O
4
63
GNDA4
I
4
64
V
IN4
I
4
Pin
Symbol
Type Function
Ch.
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