tda8029hl-c207 NXP Semiconductors, tda8029hl-c207 Datasheet - Page 14
tda8029hl-c207
Manufacturer Part Number
tda8029hl-c207
Description
Low Power Single Card Reader
Manufacturer
NXP Semiconductors
Datasheet
1.TDA8029HL-C207.pdf
(59 pages)
- Current page: 14 of 59
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Philips Semiconductors
9397 750 14145
Product data sheet
Fig 3. Timer 2 in auto-reload mode with DCEN = 0
Fig 4. Timer 2 in auto-reload mode with DCEN = 1
OSC
OSC
8.2.4 Baud rate generator mode
T2
÷ 12
T2EX
T2
÷ 12
Bits TCLK and/or RCLK in register T2CON allow the serial port transmit and receive baud
rates to be derived from either timer 1 or timer 2. When TCLK = 0, timer 1 is used as the
serial port transmit baud rate generator. When TCLK = 1, timer 2 is used. RCLK has the
same effect for the serial port receive baud rate. With these two bits, the serial port can
have different receive and transmit baud rates, one generated by timer 1, the other by
timer 2.
The baud rate generation mode is like the auto-reload mode, in that a rollover in TH2
causes the timer 2 registers to be reloaded with the 16-bit value in registers RCAP2H and
RCAP2L, which are preset by software.
transition
C/T2 = 0
C/T2 = 1
detector
C/T2 = 0
C/T2 = 1
EXEN2
TR2
control
control
TR2
reload
Rev. 03 — 22 February 2005
control
(down counting reload value)
(up counting reload value)
RCAP2L
FFh
TL2
RCAP2L
(8-BIT)
TL2
RCAP2H
FFh
TH2
RCAP2H
(8-BIT)
TH2
overflow
EXF2
TF2
T2EX
Low power single card reader
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
count
direction
HIGH = up
LOW = down
mgw423
toggle
TF2
TDA8029
timer 2
interrupt
mgw424
EXF2
interrupt
14 of 59
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