TCA5013 Datasheet, PDF (20/68 Pages) Texas Instruments – Feature Rich Smartcard Interface IC

TCA5013
SCPS253B – JANUARY 2014 – REVISED JANUARY 2016
www.ti.com
Device Functional Modes (continued)
8.4.4.1 User Card Operating Mode Selection
The user card interface in the TCA5013 can be activated in different operating modes. When the
START_ASYNC bit (bit [0]; Reg 0x01) is set the user card interface is activated in asynchronous operating mode.
When START_SYNC bit (bit[0]; Reg 0x09) is set the user card interface is activated in synchronous type1,
synchronous type 2 or manual operating mode. When the START_SYNC bit is set, the operating mode is
determined by the ACTIVATION_TYPE bit (bit [6]; Reg 0x09) and CARD_TYPE bit (bit [7] Reg 0x09).
If ACTIVATION_TYPE bit (bit [6]; Reg 0x09) is set to ‘0’, the user card interface is activated in manual operating
mode. If the ACTIVATION_TYPE bit is set to’1’, the user card interface is set for automatic activation, where it
will be activated in synchronous type 1 or synchronous type 2 operating mode based on CARD_TYPE bit (bit [7]
Reg 0x09). If CARD_TYPE bit is set to ‘1’, the card interface is activated in synchronous type 2 operating mode.
If CARD_TYPE bit is set to ‘0’ the card interface is activated in synchronous type 1 operating mode.
Any changes made to the START_SYNC, START_ASYNC, CARD_TYPE or ACTIVATION_TYPE bits when the
user card interface is active, will be ignored and will have no effect on the device. These new settings will take
effect only on the next card interface activation following deactivation (see Deactivation Sequence).
8.4.4.2 Synchronous Type 1 Operating Mode
Synchronous type 1 operating mode is only supported on the user card interface. To enter synchronous
operating mode, the user card interface goes through the synchronous type 1 activation sequence. Figure 4
shows the synchronous type 1 activation sequence.
CLKIN1 shall be low before the synchronous type 1 activation sequence is initiated. The following bit settings are
required to initiate a synchronous type 1 activation sequence.
• ACTIVATION_TYPE (bit [6]; Reg 0x09) = 1
• CARD_TYPE (bit [7]; Reg 0x09) = 0
• START_SYNC (bit [0]; Reg 0x09) = 1
VCCUC
t _S1-RST-CLK
RSTUC
CLKUC
IOUC
t
S1-RST-HI
t _S1-CLK-HI
t _S1-CLK-RST
All High levels refer to 0 .9 Vcc
All Low levels refer to 0 . 1 Vcc
t _R = t _F < 0. 5 μs
t
S1-CLK-LO
t _S1-CLK-PER
t
S1-ATR-SETUP
32 Clock cycles (4 Bytes)
Bit 0
t
S1-ATR-SETUP
Bit 1 to Bit 30 of
ATR response
Bit 31
C4
C8
INT
Figure 4. Synchronous Type 1 Activation Sequence
20
Submit Documentation Feedback
Product Folder Links: TCA5013
Copyright © 2014–2016, Texas Instruments Incorporated