tda5255e1 Infineon Technologies Corporation, tda5255e1 Datasheet - Page 34

• Manufacturer Part Number: tda5255e1
• Description: Ask/fsk 434mhz Wireless Transceiver
• Manufacturer: Infineon Technologies Corporation

Confidential
Note: The time values are typical values
This means that the device needs t
When activating TX it requires t
For timing information refer to Table 4-3.
For Test purposes a TESTMODE is provided by the Sequencer as well. In this mode the
BLOCK_PD register be set to various values. This will override the Sequencer timing. Depending
on the settings in Config Register 00H the corresponding building blocks are enabled, as shown in
the subsequent figure.
Figure 2-17
2.4.19
It supports an external logic with a programmable Clock at pin 26 (CLKDIV).
Figure 2-18
The Output Selection and Divider Ratio can be set in the CLK_DIV register.
Preliminary Specification
Clock Divider
Sequencer‘s capability
Clock Divider
18 MHz
INTERNAL BUS
4 BIT COUNTER
TXSU
INTERNAL BUS
ASK/FSK
DDSU
WINDOW COUNT COMPLETE
RESET
32 kHz
RX ON
TX ON
setup time to enable the power amplifier.
setup time to start the data detection after RX is activated.
32 kHz
34
16
16
2
16
CLKDiv
26
RC- OSC.
XTAL FREQU.
SELECT
Functional Description
TDA5255 E1
Version 1.1
sequencer_raw.wmf
2002-11-28
clk_div.wmf