psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 19

• Manufacturer Part Number: psb21391
• Description: Siemens Codec With Upn Transceiver
• Manufacturer: Infineon Technologies Corporation

1.4
Table 1
Pin No. Symbol
Data Sheet
31
16
36
27
30
17
37
26
34
21
22
25
24
23
11
10
35
1
3
9
V
V
V
V
V
V
V
V
V
V
VDDSEL I
DD
DU
FSC
DCL
BCL
SDS1
RSTO/
SDS2
RST
VDDDET I
Pin Definitions and Function
DDL
DDD
DDA
DDP
DDPLL
SSL
SSD
SSA
SSP
SSPLL
Input (I)
Output (O)
Open Drain
(OD)
–
–
–
–
–
–
–
–
–
–
I/OD/O
I/OD/O
I/O
I/O
O
O
OD
O
I
Function
Power supply (3.3 V or 5 V
Supply voltage for line driver
Supply voltage for digital parts
Supply voltage for analog parts
Supply voltage for loudspeaker
Supply voltage for internal PLL
Ground for line driver
Ground for digital parts
Ground for analog parts
Ground for loudspeaker
Ground for internal PLL
VDD Selection
’0’: 3.3 V supply voltage
’1’: 5 V supply voltage
IOM-2 Interface
Data Downstream
Data Upstream
Frame Synchronization Clock (8 kHz)
Data Clock (double clock, 1.536 MHz)
Bit Clock (768kHz)
Programmable strobe signal or bit clock
Reset Output (active low)
Strobe signal for each IOM
D channel indication (programmable)
RESET
Reset (active low)
VDD Detection enable (active low)
9
®
time slot and/or
5 %)
PSB 21391
PSB 21393
2001-03-07
Overview