psb21381 Infineon Technologies Corporation, psb21381 Datasheet - Page 20

• Manufacturer Part Number: psb21381
• Description: Siemens Codec With S/t Transceiver
• Manufacturer: Infineon Technologies Corporation

Data Sheet
Table 1 (cont’d)
Pin No.
MQFP-44
11
10
32
33
28
29
13
14
15
12
9
8
7
-
Pin No.
MQFP-64
16
15
14
47
48
43
44
18
19
20
13
17
12
9
Symbol
SDS1
RSTO/
SDS2
RST
SR1
SR2
SX1
SX2
XTAL2
XTAL1
EAW
INT
MCLK
CS
ALE
Input (I)
Output (O)
Open Drain
(OD)
O
OD
O
I
I
I
O
O
OI
I
I
OD
O
I
I
10
Function
Programmable strobe signal or bit
clock
Reset Output (active low)
Programmable strobe signal or bit
clock
RESET
Reset (active low)
Transceiver
S-Bus receiver input
S-Bus receiver input
S-Bus transmitter output (positive)
S-Bus transmitter output (negative)
Oscillator output
Oscillator or 7.68 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 7.2.12)
In addition an interrupt request is
generated at pin INT.
Microcontroller Interface
Interrupt request (active low)
Microcontroller Clock
Chip Select (active low)
During reset also used as interface
selection pin (see chapter 2.1)
Multiplexed bus mode: Address Latch
Enable
Non-multiplexed bus and serial mode:
Interface selection pin (see chapter
2.1)
PSB 21381/2
PSB 21383/4
2001-03-12
Overview