TDA8029 Philips Semiconductors, TDA8029 Datasheet - Page 18

• Manufacturer Part Number: TDA8029
• Description: Low power single card reader
• Manufacturer: Philips Semiconductors

Philips Semiconductors
8.2.5
Except for the baud rate generator mode, the values given for T2CON do not include the setting of the TR2 bit. Therefore,
bit TR2 must be set, separately, to turn the timer on.
Table 10 Timer 2 as a timer
Notes
1. Capture/reload occurs only on timer/counter overflow.
2. Capture/reload on timer/counter overflow and a HIGH to LOW transition on T2EX, except when timer 2 is used in the
Table 11 Timer 2 as a counter
Notes
1. Capture/reload occurs only on timer/counter overflow.
2. Capture/reload on timer/counter overflow and a HIGH to LOW transition on T2EX (P1.1) pin except when timer 2 is
8.3
The UART operates in all of the usual modes that are described in the first section of “ Data Handbook IC20,
80C51-based 8-bit microcontrollers” . In addition the UART can perform framing error detection by looking for missing
stop bits and automatic address recognition. The UART also fully supports multiprocessor communication as does the
standard 80C51 UART.
When used for framing error detection the UART looks for missing stop bits in the communication. A missing bit will set
the bit FE or bit 7 in the SCON register. Bit FE is shared with bit SM0. The function of SCON bit 7 is determined by bit 6
in register PCON (bit SMOD0). If SMOD0 is set then bit 7 of register SCON functions as FE and as SM0 when SMOD0
is cleared. When used as FE this bit can only be cleared by software.
8.3.1
Table 12 Serial port control register bits
2003 Oct 30
16-bit auto-reload
Baud rate generator receive and
transmit same baud rate
Receive only
Transmit only
16-bit
Auto-reload
Symbol
Low power single card reader
baud rate generator mode.
used in the baud rate generator mode.
BIT
Enhanced UART
T
S
IMER
ERIAL PORT
/
COUNTER
MODE
MODE
SM0/FE
7
C
ONTROL REGISTER
2
SET
-
UP
SM1
6
(SCON)
INTERNAL CONTROL
INTERNAL CONTROL
SM2
5
00
34
24
14
02
03
18
REN
4
(1)
(1)
(HEX)
(HEX)
TB8
3
T2CON
T2CON
EXTERNAL CONTROL
EXTERNAL CONTROL
RB8
2
0B
08
36
26
16
04
Product specification
TI
1
TDA8029
(2)
(2)
(HEX)
(HEX)
RI
0