參數(shù)資料
型號(hào)： 8XC51FB
廠商： NXP Semiconductors N.V.
英文描述： Low power single card reader
中文描述： 低功耗單卡讀卡器
文件頁(yè)數(shù)： 36/58頁(yè)
文件大?。?/td> 233K
代理商： 8XC51FB
2003 Oct 30
36
Philips Semiconductors
Product specification
Low power single card reader
TDA8029
8.10.3
C
ARD REGISTERS
When working with a card, the following registers are used for programming some specific parameters.
8.10.3.1
Programmable Divider Register (PDR)
This register is used for counting the card clock cycles forming the ETU. It is an auto-reload 8 bits counter counting from
the programmed value down to 0.
Table 54
Programmable divider register, address 2h, read and write
Table 55
Description of register bits
8.10.3.2
UART Configuration Register 2 (UCR2)
Table 56
UART configuration register 2, address 3h, read and write
2
OVR
Overrun.
OVR = 1 if the UART has received a new character whilst URR was full. In this
case, at least one character has been lost.
Framing Error.
FER = 1 when I/O was not in high-impedance state at 10.25 ETU after a
start-bit. It is reset when USR has been read.
Transmit Buffer Empty/Receive Buffer Full.
TBE and RBF share the same bit within
register USR: when in transmission mode the relevant bit is TBE; when in reception
mode it is RBF.
1
FER
0
TBE/RBF
TBE = 1 when the UART is in transmission mode and when the microcontroller may write
the next character to transmit in register UTR. It is reset when the microcontroller has
written data in the transmit register or when bit T/R in register UCR1 has been reset
either automatically or by software. After detection of a parity error in transmission, it is
necessary to wait 13.5 ETU before rewriting the character which has been NAKed by the
card (manual mode, see Table 51).
RBF = 1 when register FIFO is full. The microcontroller may read some of the characters
in register URR, which clears bit RBF.
BIT
7
6
5
4
3
2
1
0
Symbol
Reset value
PD7
0
PD6
0
PD5
0
PD4
0
PD3
0
PD2
0
PD1
0
PD0
0
BIT
SYMBOL
DESCRIPTION
7 to 0
PD[7:0]
Programmable divider value.
BIT
7
6
5
4
3
2
1
0
Symbol
ENINT1
DISTBE/
RBF
0
ENRX
SAN
AUTOCONV
CKU
PSC
Reset value
0
0
0
0
0
0
0
BIT
SYMBOL
DESCRIPTION
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