SLOS743M August 2011 – March 2020 TRF7970A
PRODUCTION DATA.
Table 6-29 describes the ISO/IEC 14443 TX Options register.
Function: Selects the ISO subsets for ISO/IEC 14443 – TX | |||
Default: 0x00 at POR = H or EN = L | |||
Bit | Name | Function | Description |
B7 | egt2 | TX EGT time select MSB | Three bit code defines the number of etu (0-7) which separate two characters. ISO/IEC 14443 B TX only. |
B6 | egt1 | TX EGT time select | |
B5 | egt0 | TX EGT time select LSB | |
B4 | eof_l0 | 1 = EOF→ 0 length 11 etu
0 = EOF→ 0 length 10 etu |
ISO/IEC 14443 B TX only |
B3 | sof_l1 | 1 = SOF→ 1 length 03 etu
0 = SOF→ 1 length 02 etu |
|
B2 | sof _l0 | 1 = SOF→ 0 length 11 etu
0 = SOF→ 0 length 10 etu |
|
B1 | l_egt | 1 = EGT after each byte
0 = EGT after last byte is omitted |
|
B0 | Auto SDD_SAK | 1 = ISO/IEC 14443 A Layer 4 compliant (in SAK response)
0 = Not Layer 4 compliant (in SAK response) |
For use with Auto SDD configuration, makes B6 in ISO/IEC 14443 A response 1 or 0, indicating Layer 4 compliance (or not), for all other cases, this bit is unused |