ATR statistics: TB4 - Global after T=15 in TDi–1

Article from the series "ATR statistics".

TB4 - Global after T=15 in TD_i–1

For T=15 protocol TB_i the coding is defined in the document ETSI TS 102 221 V10.0.0 (2011-12) chapter "6.3.3 Global Interface byte".

Table 6.7: Coding of the first TBi (i > 2) after T = 15 of the ATR

b8	b7	b6	b5	b4	b3	b2	b1	Meaning
0	0	0	0	0	0	0	0	No additional global interface parameters supported
1	-	-	1	-	-	-	-	Low Impedance drivers and protocol available on the I/O line available (see clause 7.2.1)
1	1	-	-	-	-	-	-	Inter-Chip USB UICC-Terminal interface supported as defined in TS 102 60
1	-	1	-	-	-	-	-	UICC-CLF interface supported as defined in TS 102 613
1	-	-	-	1	-	-	-	Secure Channel supported as defined in TS 102 484
1	-	-	-	1	1	-	-	Secured APDU - Platform to Platform required as defined in TS 102 484
NOTE: Any other value is RFU.

TB4	#	%
	2070	99.90 %
0x83	2	0.10 %

Only 2 cards have a TB₄ in the ATR. They are:

• 3B DE 18 FF 81 F1 FE 43 00 3F 07 83 44 45 53 46 69 72 65 38 20 53 41 4D 2D 58 17 NXP SAM
• 3B DF 18 FF 81 F1 FE 43 00 3F 03 83 4D 49 46 41 52 45 20 50 6C 75 73 20 53 41 4D 3B NXP SAM AV2 module

The 2 cards use the same value for TB₄: 0x83 that is RFU.