MC145484 Datasheet, PDF (21/26 Pages) Motorola, Inc – 5V PCM CODEC-FILTER

1.0 µF
10 kΩ
R0 = 600 Ω TIP
N=1
RING
N=1
0.1 µF
10 kΩ
R0
10 kΩ
+5V
0.1 µF
1 _{VAG Ref}
2 _RO–
3 _PI
4 _PO–
5 _PO+
6 _VDD
7 _FSR
8 _DR
9 _BCLKR
10 _PDI
V_AG ²⁰
TI+ ¹⁹
TI– ¹⁸
TG ¹⁷
10 kΩ
Mu/A ¹⁶
+5V
V_SS ¹⁵
FST ¹⁴
DT ¹³
BCLKT ¹²
MCLK ¹¹
0.1 µF
FSC – 8 kHz
D_out
DCL – 4.096 MHz
D_in
B1 – 0 V
B2 – + 5 V
Figure 11. MC145484 Transformer Interface to 600 Ω Telephone Line with GCI Clocking
R0 = 600 Ω TIP
N = 0.5
– 48 V
N = 0.5
RING
1.0 µF
10 kΩ
0.1 µF
10 kΩ
1/4 R0 10 kΩ
N = 0.5
+5V
0.1 µF
1 _{VAG Ref}
2 _RO–
3 _PI
4 _PO–
5 _PO+
6 _VDD
7 _FSR
8 _DR
9 _BCLKR
10 _PDI
20
V_AG
19
TI+
18
TI–
17
TG
20 kΩ
Mu/A ¹⁶
+5V
15
V_SS
14
FST
13
DT
12
BCLKT
11
MCLK
0.1 µF
8 kHz
PCM OUT
2.048 MHz
PCM IN
Figure 12. MC145484 Step–Up Transformer Interface to 600 Ω Telephone Line
MOTOROLA
MC145484
21