ACS ACR100I User Manual download pdf (Page 13)

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ACR100I Reference Manual

Version 1.00

Page 13 of 20

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7.1.1.7. PC_to_RDR_SetParameters

Set slot parameters.

Offset

Field

Size

Value

Description

0

bMessageType

1

61h

1

dwLength

4

Size of extra bytes of this message

5

bSlot

1

Identifies the slot number for this

command

6

bSeq

1

Sequence number for command

7

bProtocolNum

1

Specifies what protocol data structure

follows.

00h = Structure for protocol T=0

01h = Structure for protocol T=1

The following values are reserved for

future use.

80h = Structure for 2-wire protocol

81h = Structure for 3-wire protocol

82h = Structure for I2C protocol

8

abRFU

2

Reserved for future use

10

abProtocolDataS

tructure

Byte

array

Protocol Data Structure

Protocol Data Structure for Protocol T=0 (dwLength=00000005h)

Offset

Field

Size

Value

Description

10

bmFindexDindex

1

B7-4 – FI – Index into the Table 7 in

ISO/IEC 7816-3:1997 selecting a clock

rate conversion factor

B3-0 – DI - Index into the Table 8 in

ISO/IEC 7816-3:1997 selecting a baud

rate conversion factor

11

bmTCCKST0

1

B0 – 0b, B7-2 – 000000b

B1 – Convention used (b1=0 for direct,

b1=1 for inverse) Note: The CCID

ignores this bit.

12

bGuardTimeT0

1

Extra Guardtime between two

characters. Add 0 to 254 etu to the

normal guardtime of 12etu. FFh is the

same as 00h.

13

bWaitingIntege

rT0

1

WI for T=0 used to define WWT

14

bClockStop

1

ICC Clock Stop Support

00h = Stopping the Clock is not allowed

01h = Stop with Clock signal Low

02h = Stop with Clock signal High

03h = Stop with Clock either High or Low

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