psf21911 ETC-unknow, psf21911 Datasheet - Page 13

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

1.5
The following tables group the pins according to their functions. They include pin name,
pin number, type and a brief description of the function.
Power Supply Pins
Mode Selection Pins
Semiconductor Group
Pin No.
P-LCC-44 T-QFP64
1, 2
5
7, 8
9
13
16
23
3
18
Pin Definitions and Functions
7, 8, 12
14
18, 19
21
26
30
41
10
35
Symbol
Stand-
alone
V
GNDa1 GNDa1
V
V
V
GNDa2 GNDa2
GNDd
TSP
AUTO
DDd
DDa1
REF
DDa2
µP
mode
V
V
V
V
GNDd
CS
RST
DDd
DDa1
REF
DDa2
I/O
I
I
I
O
I
I
I
I
I
I
O
13
Function
5 V
0 V analog
5 V
V
voltage with capacitor 100 nF vs GND
5 V
0 V analog
0 V digital
Single Pulse Test Mode
For activation refer to table 3 on
page 27. When active, alternating
2.5 V pulses are issued in 1.5 ms
intervals. Tie to GND if not used.
Chip Select
(Multiplexed, demultiplexed and serial
modes): Low active.
Auto EOC Mode
Selection
transparent mode for EOC channel
processing. (Automode = (1))
Reset output
(Multiplexed, demultiplexed and serial
modes): Low active.
REF
pin to buffer internally generated
5% digital supply voltage
5% analog supply voltage
5% analog supply voltage
Pin Definitions and Functions
between
PSB 21911
auto-
PSF 21911
11.97
and