TCA5013 Datasheet, PDF (49/68 Pages) Texas Instruments – Feature Rich Smartcard Interface IC

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TCA5013
SCPS253B – JANUARY 2014 – REVISED JANUARY 2016
REGISTER
ADDRESS
0x20
0x20
0x20
0x20
0x20
0x20
0x20
0x21
0x21
0x21
0x21
0x21
DESCRIPTION
FIELD NAME
SAM2 Interface Status
1: Card interface is active (V_CC is ramped and stable)
0: Card interface is inactive
ACTIVE_SAM2
1: Indicates card ATR was received before the ATR valid window.
INT_SAM2 bit is set in interrupt register.
Bit is cleared when the register is read
EARLY_SAM2
1: Indicates card ATR was not received within the ATR valid
window. INT_SAM2 bit is set in interrupt register.
Bit is cleared when the register is read.
MUTE_SAM2
1: Indicates over current condition on the card interface. INT_SAM2
bit is set in interrupt register.
PROT_UC_SAM2
Bit clears when the register is read
1: Indicates the card interface is in internal CLK mode i.e frequency
on CLK pin is ~1.2Mhz
CLKSW_SAM2
0: Indicates the card interface is not in internal clock mode.
1: indicates V_CC ramp fault on card interface. INT_SAM2 bit is set
in interrupt register.
Bit is cleared when register is read
VCC_FAIL_SAM2
SAM2 Interface Settings
00 : set V_CC to 1.8 V
01 : set V_CC to 1.8 V
10 : set V_CC to 3 V
11 : set V_CC to 5 V
1: IOMC2 is connected to IOS2
0: IOMC2 is disconnected from IOS2
SET_VCC_SAM2
IO_EN_SAM2
1: Warm reset sequence is started on SAM2
Bit is clears when warm reset sequence starts.
WARM_SAM2
1: Starts activation sequence
0: Starts deactivation sequence
Bit clears when automatic deactivation occurs
START_ASYNC_SAM2
BIT
R/W
DEFAU
LT
7
R
1'b0
6
R
1'b0
5
R
1'b0
4
R
1'b0
3
R
1'b0
0
R
1’b0
[7:6] R/W 2'b01
5 R/W 1'b0
3 R/W 1'b0
0 R/W 1'b0
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