PEF 82912 F V1.4 Infineon Technologies, PEF 82912 F V1.4 Datasheet - Page 38

• Manufacturer Part Number: PEF 82912 F V1.4
• Description: IC MODULAR ISDN NT INTELL TQFP64
• Manufacturer: Infineon Technologies
• Series: Q-SMINT®r

Specifications of PEF 82912 F V1.4

• Function: Second Generation Modular
• Interface: ISDN
• Mounting Type: Surface Mount
• Package / Case: 64-LFTQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Power (watts): -
• Operating Temperature: -
• Number Of Circuits: -
• Other names: PEF82912FV1.4XT; PEF82912FV14XP; SP000007558; SP000007559

•
Figure 8
2.1.3
The microcontroller clock is derived from the unregulated 15.36 MHz clock from the
oscillator and provided by the pin MCLK. Five clock rates are selectable by a
programmable prescaler which is controlled by the bits MODE1.MCLK and
MODE1.CDS corresponding to the following table.
Table 7
The clock rate is changed after CS becomes inactive.
Data Sheet
0
0
1
1
MODE1.
MCLK
A6 - A0
Bits
7Dh
7Ch
7Fh
7Eh
04h
03h
02h
01h
00h
Microcontroller Clock Generation
0
1
0
1
Direct/Indirect Register Address Mode
MCLK Frequencies
Direct Address Mode
AMOD = ´1´
MODE1.CDS = ’0’
MCLK frequency
D7 - D0
Data
3.84 MHz
0.96 MHz
7.68 MHz
disabled
with
24
A0
1h
0h
Indirect Address Mode
AMOD = ´0´ (default)
ADDRESS
MODE1.CDS = ’1’
MCLK frequency
DATA
Functional Description
15.36 MHz
7.68 MHz
1.92 MHz
disabled
PEF 82912/82913
with
regacces.vsd
D7 - D0
Data
2001-03-30