TDA8029 Datasheet, PDF (38/59 Pages) NXP Semiconductors – Low power single card reader

Philips Semiconductors
TDA8029
Low power single card reader
Table 64:
Bit
7 to 0
GTR - UART guard time register (address 5h) bit description
Symbol
Description
GT[7:0]
Guard time value. When GT[7:0] = FFh:
• In protocol T = 1:
– TDA8029HL/C1 operates at 11 ETU
– TDA8029HL/C2 operates at 10.8 ETU.
• In protocol T = 0:
– TDA8029HL/C1 operates at 12 ETU
– TDA8029HL/C2 operates at 11.8 ETU.
8.10.3.4 UART configuration register 1 (UCR1)
This register is used for setting the parameters of the ISO UART.
Table 65: UCR1 - UART configuration register 1 (address 6h) bit allocation
Bit
7
6
5
4
3
2
1
Symbol
-
FIP
FC
PROT
T/R
LCT
SS
Reset
-
0
0
0
0
0
0
Access
read and write
0
CONV
0
Table 66: UCR1 - UART configuration register 1 (address 6h) bit description
Bit
Symbol
Description
7
-
Not used.
6
FIP
Force Inverse Parity. If FIP = 1, then the UART will NAK a correct received character, and
will transmit characters with wrong parity bit.
5
FC
Test bit. FC must be left to logic 0.
4
PROT
Protocol. If PROT = 1, then protocol type is asynchronous T = 1; if PROT = 0, the
protocol is T = 0.
3
T/R
Transmit/Receive. This bit is set by software for transmission mode. A change from
logic 0 to logic 1 will set bit TBE in register USR. T/R is automatically reset by hardware if
LCT has been used before transmitting the last character.
2
LCT
Last Character to Transmit. This bit is set by software before writing the last character to
be transmitted in register UTR. It allows automatic change to reception mode. It is reset
by hardware at the end of a successful transmission. When LCT is being reset, the bit
T/R is also reset and the ISO 7816 UART is ready for receiving a character.
1
SS
Start Session. This bit is set by software before ATR for automatic convention detection
and early answer detection. It is automatically reset by hardware at 10.5 ETU after
reception of the initial character.
0
CONV
Convention. This bit is set if the convention is direct. Bit CONV is either automatically
written by hardware according to the convention detected during ATR, or by software if
bit AUTOCONV in register UCR2 is set.
8.10.3.5 Clock configuration register (CCR)
This register defines the clock to the card and the clock to the ISO UART. Note that if bit
CKU in the prescaler register of the selected card (register UCR2) is set, then the ISO
UART is clocked at twice the frequency to the card, which allows to reach baud rates not
foreseen in ISO 7816 norm.
9397 750 14145
Product data sheet
Rev. 03 — 22 February 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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