PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 13

• Manufacturer Part Number: PSB7238
• Description: Joint Audio Decoder-Encoder - Multimode
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

91
86
Table 5
Pin No. Symbol Function Descriptions
75
73
69
67
63
61
56
54
50
48
39
37
32
30
26
24
Table 4
Pin No. Symbol Function Descriptions
90
Semiconductor Group
XTAL1
XTAL2
CLKO
CA0
CA1
CA2
CA3
CA4
CA5
CA6
CA7
CA8
CA9
CA10
CA11
CA12
CA13
CA14
CA15
System Clocks
External Memory Interface (for Development Purposes only)
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Crystal In or Clock In.
Clock Out.
Is to be left NC if not used.
If a crystal is used, it is connected between XTAL1 and
XTAL2. If a clock signal is provided (via an external
oscillator), this signal is input via XTAL1. In this case the
XTAL2 output is to be left non-connected. The XTAL1
input has to be 50% duty cycle and must not exceed the
voltage range between
Crystal Out.
Left unconnected if a crystal is not used.
Output clock of frequency equal to the internal frequency
divided by a programmable factor.
C-Bus Address.
Used for addressing ROM or RAM external to the chip.
13
V
SSA
and
V
DDA
Data Sheet 1998-07-01
.
Introduction
PSB 7238