tda8029hl-c207 NXP Semiconductors, tda8029hl-c207 Datasheet - Page 16
tda8029hl-c207
Manufacturer Part Number
tda8029hl-c207
Description
Low Power Single Card Reader
Manufacturer
NXP Semiconductors
Datasheet
1.TDA8029HL-C207.pdf
(59 pages)
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Philips Semiconductors
9397 750 14145
Product data sheet
Fig 5. Timer 2 in baud rate generator mode
OSC
T2EX
8.2.5 Timer/counter 2 set-up
T2
transition
÷ 2
detector
Summary of baud rate equations: Timer 2 is in baud rate generating mode. If timer 2 is
being clocked through T2 (P1.0) the baud rate is:
If timer 2 is being clocked internally, the baud rate is:
To obtain the reload value for RCAP2H and RCAP2L, the above equation can be rewritten
as:
where f
Except for the baud rate generator mode, the values given in
include the setting of the TR2 bit. Therefore, bit TR2 must be set, separately, to turn the
timer on.
Baud rate
Baud rate
RCAP2H RCAP2L
C/T2 = 0
C/T2 = 1
note f osc is divided by 2, not 12
note availability of additional external interrupt
osc
EXEN2
= oscillator frequency.
=
=
control
Timer 2 overflow rate
---------------------------------------------------------- -
---------------------------------------------------------------------------------------------
32
TR2
control
EXF2
65536
=
Oscillator frequency
Rev. 03 — 22 February 2005
65536
16
–
RCAP2L
timer 2
interrupt
RCAP2H RCAP2L
(8-bit)
–
TL2
------------------------------------- -
32 baud rate
f
RCAP2H
osc
(8-bit)
TH2
reload
1
1
÷ 2
Low power single card reader
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
overflow
0
timer 1
0
0
Table 13
1
÷ 16
÷ 16
TDA8029
for T2CON do not
RCLK
TCLK
SMOD
mgw425
RX clock
TX clock
16 of 59
(3)
(4)
(5)
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