Document Version 1.2
Last revised on
2017-09-26
Page 83 of 92
Reference Manual for uTrust 4701F and uTrust 4711F Readers
6.3.5.12.
CONTACT_GET_SET_WAITTIME
This Escape command is used to get/set the Character/Block Waiting Time for smartcards. The wait
time is specified in terms of ETU. Once set, the new Wait time will take effect from the next card
communication.
Input:
The input buffer contains the Escape code followed by an 8 bit GET/SET identifier, an 8 bit Wait time
identifier and a 32 bit Wait time value. BWT must be specified in units of 1.25ms and CWT in units of
ETU.
Byte0
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
Value
Description
Value
Description
Wait time in ETU
Escape
code
(0x81)
0x01
SET
Wait
time
0x00
CWT
BIT31-
BIT24
BIT23-
BIT16
BIT15-
BIT8
BIT7-
BIT0
0x01
BWT
0x00
GET
Wait
time
0x00
CWT
-
-
-
-
0x01
BWT
Output:
For both Get/Set Wait time, the output will be the following.
Byte0
Byte1
Byte2
Byte3
Wait time in ETU
BIT31-BIT24
BIT23-BIT16
BIT15-BIT8
BIT7-BIT0
DataIn =
81 00 01
DataOut:
00 00 03 5D
(4 bytes)
6.3.5.13.
CONTACT_GET_SET_GUARDTIME
Thi
s Escape command is used to get/set the Character/Block Guard Time of the reader. The guard time
is specified in terms of ETU. Once set, the new Guard time will take effect immediately.
Input:
The input buffer contains the Escape code followed by an 8 bit GET/SET identifier, an 8 bit guard time
identifier and a 32 bit guard time value in ETU.
Byte0
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
Value
Description
Value
Description
Guard time in ETU
Escape
code
(0x82)
0x01
SET
Guard
time
0x00
CGT
BIT31-
BIT24
BIT23-
BIT16
BIT15-
BIT8
BIT7-
BIT0
0x01
BGT
0x00
GET
Guard
time
0x00
CGT
-
-
-
-
0x01
BGT