AT42QT1110-MZ Datasheet, PDF (26/48 Pages) ATMEL Corporation – Device configuration can be stored in EEPROM

6.7 Error Keys (0xC5)
This command returns a 2-byte bit-field report indicating the error status of all 11 keys. Note that
disabled keys do not report errors.
Table 6-5.
Byte 0
Byte 1
Send All Keys Report Format
Bit 7
Bit 6
Bit 5
Bit 4
KEY_7
KEY_6
KEY_5
KEY_4
Bit 3
KEY_3
Bit 2
KEY_10
KEY_2
Bit 1
KEY_9
KEY_1
Bit 0
KEY_8
KEY_0
KEY_n: 0 = key n status good, 1 = key n in error (where n is 0–10).
6.8 Signal for Key “k” (0x2k)
This command returns a 2-byte report containing the most recent measured signal for key “k”.
The signal is returned as a 16-bit number, MSB first.
Table 6-6.
Byte 0
Byte 1
Signal for Key “k” Report Format
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Signal MSB
Signal LSB
Bit 2
Bit 1
Bit 0
6.9 Reference for Key “k” (0x4k)
This command returns a 2-byte report containing the reference signal for key “k”. The reference
is returned as a 16-bit number, MSB first.
Table 6-7.
Byte 0
Byte 1
Reference for Key “k” Report Format
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Reference MSB
Reference LSB
Bit 2
Bit 1
Bit 0
6.10 Status for Key “k” (0x8k)
This command returns a 1-byte report containing the status for key “k”.
Table 6-8. Reference for Key “k” Report Format
Bit 7
Bit 6
Bit 5
Bit 4
Byte 0
DETECT
LBL
MBL
Bit 3
Bit 2
AKS_EN
Bit 1
CAL
Bit 0
KEY_EN
DETECT: 0ut of detect, 1 = in detect.
LBL: 0 = lower burst limit is good, 1 = lower burst limit has error.
MBL: 0 = maximum burst limit is good, 1 = maximum burst limit has error. The maximum burst
limit is fixed at 2048 pulses.
AKS_EN: 0 = AKS is disabled, 1 = AKS is enabled.
CAL: 0 = normal, 1 = calibrating.
KEY_EN: 0 = key is disabled, 1 = key is enabled.
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