psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 20

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

Data Sheet
Table 1
Pin No. Symbol
32
33
13
14
15
12
18
19
20
7
8
LIa
LIb
XTAL2
XTAL1
EAW
CS
INT
MCLK
SCLK
SDR
SDX
Input (I)
Output (O)
Open Drain
(OD)
I/O
I/O
OI
I
I
I
OD
O
I
I
OD/O
Function
Transceiver
U
Oscillator output
Oscillator or 15.36 MHz input
External Awake.
A low level on this input starts the oscillator
from the power down state and generates a
reset pulse if enabled (see chapter 7.1.10)
In addition an interrupt request is generated
at pin INT.
Microcontroller Interface
Chip Select (active low)
Interrupt request (active low)
Microcontroller Clock
Clock for the serial control interface
Serial Data Receive
Serial Data Transmit
PN
transceiver Line Interface
10
PSB 21391
PSB 21393
2001-03-07
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