2.3.9. EMV character timing for T=1 (block protocol)

The minimum interval between the leading edges of the start bits of two consecutive characters, sent by the interface to the Smart Card will be between 11 and 266 etus as indicated by the value of TC1 returned within the ATR stream.

The minimum interval between the leading edges of the start bits of two consecutive characters sent by the Smart Card to the interface will be 11 etus.

The maximum interval between the leading edges of the start bits of to consecutive characters in the same block the Character Waiting Time (CWT) will not exceed (2*CWI + 11) etus. The Character Waiting Integer (CWI) will have a value of 0 to 5, resulting in the CWT having the range 12 to 43 etus.

The maximum interval between the leading edge of the start bit of the last character that gave the right to send to the Smart Card and the leading edge of the first character sent by the Smart Card the Block Waiting Time (BWT) will not exceed ((2*BWI x 960) + 11) etus. The Block Waiting Integer (BWI) will have a value in the range 0 to 4, resulting in the BWT having the range 971 to 15371 etus.

The minimum interval between the leading edges of the start bits of two consecutive characters sent in opposite directions the Block Guard Time (BGT) will be 22 etus.

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