HFC-S2M Cologne Chip AG, HFC-S2M Datasheet - Page 152

• Manufacturer Part Number: HFC-S2M
• Description: Isdn HDLC Fifo Controller With Primary Rate Interface
• Manufacturer: Cologne Chip AG

HFC-E1
5.3 External circuitries
152 of 272
U1
HFC-E1
T_B
T_A
184
185
R11
R2
1 0
1 0
1 0 0 n
R10
1 0 0 n
1 0 0 n
1 0 0 n
R14
C1
C2
C3
C4
R5
+ 3 . 3 V
+ 3 . 3 V
GND
GND
R1
1 k
B A V 9 9
D1
B A V 9 9
D6
Figure 5.3: External E1 transmit circuitry
+ 3 . 3 V
GND
+ 3 . 3 V
G N D
*
*
B C 8 4 8 C
Q 3
B C 8 4 8 C
Q 2
Q 4
Q 1
B C 8 5 8 C
B C 8 5 8 C
* f o r i m p e d a n c e
* for impedance
R3
R12
a d j u s t m e n t
adjustment
GND
E1 interface
Data Sheet
D2
D4
D3
D5
+ 3 . 3 V
nc
1
2
3
TR1
UMEC 23014
T X
March 2003 (rev. A)
1 : 2 , 4
16
15
14
Cologne
Chip
o p t i o n a l
GND
C5