Kontron EPIC/PM, Руководство пользователя

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17 16BGeneral Purpose I/O
Kontron User's Guide
EPIC/PM
52
CR14 - GP Port 2: Mode Configuration Register
Bit 7 Æ 1, Set GP/INT pin as INT function. 0, set GP/INT pin as GP function.
Bit 6 Æ 1, Set INT function at GP26(pin 12). 0, Set INT function at GP17(pin 18).
Bit 5 Æ 1, Set INT output pin as pulse mode. 0, set INT output pin as level mode.
Bit 4
Æ
1, Set INT out pin polarity is 1 (normal high). 0, set INT out pin polarity is 0 (normal
low).
Bit 3 Æ 1, Port 2 (CR09h-CR0Ch,CR11h,CR13h) registers can be reset to default data during
PCIRESET#. 0, Port 2 (CR09h-CR0Ch) can not be reset during PCIRESET#.
Bit 2
Æ
1, Port 1 (CR01h-CR04h,CR10h,CR12h) registers can be reset to default data during
PCIRESET#. 0, Port 1 (CR01h-CR04h) can not be reset during PCIRESET#.
Bit 1 Æ 1, Port 2 CR0Dh can be latched not only by PCIRESET# but also power-on period.
0, Port 2 CR0Dh can only be latched by power-on period.
Bit 0 Æ 1, Port 1 CR05h can be latched not only by PCIRESET# but also power-on period.
0, Port 1 CR05h can only be latched by power-on period.
17.2.4 Output Waveforms
Depending on the register settings following output waveforms are possible on the GPIO pins.
17.3 SMBus Interface
Pins 17 (SMB_DATA) and 18 (SMB_CLK) represent the SMBus interface of the System.
Use these pins to communicate with the Smart Battery module if connected. Otherwise these pins must
be left unconnected.