aduc7030 Analog Devices, Inc., aduc7030 Datasheet - Page 98

• Manufacturer Part Number: aduc7030
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

ADuC7030/ADuC7033
GPIO Port2 Control Register:
Name:
Address:
Default Value:
Access:
Function:
Table 55. GP2CON MMR Bit Designations
Bit
31-
25
24
23-
21
20
19-
17
16
15-
5
4
3-1
0
Description
Reserved
These bits are reserved and should be written as 0 by user code
GPIO_13 Function Select Bit
This bit is set to 1 by user code to route the STI data output to the STI pin. If this bit is clear to 0 by user code, then the STI data will
not be routed to the external STI pin even if the STI interface itself is enabled correctly.
Reserved
These bits are reserved and should be written as 0 by user code
GPIO_12 Function Select Bit
This bit is cleared to 0 by user code to route the LIN/BSD transmit data to an internal General Purpose I/O (GPIO_12) pad which can
then be written via the GP2DAT MMR. This configuration is used in BSD mode to allow user code write output data to the BSD
interface and can also be used to support diagnostic write capability to the high-voltage I/O pins(see HVCFG1[2:0]).
This bit is set to 1 by user code to route the UART TxD (transmit data) to the LIN/BSD data pin. This configuration is used in LIN mode.
Reserved
These bits are reserved and should be written as 0 by user code
GPIO_11 Function Select Bit
This bit is cleared to 0 by user code to internally disable the LIN/BSD input data path. In this configuration GPIO_11 is used to support
diagnostic read-back on all external high-voltage I/O pins (see HVCFG1[2:0])
This bit is set to 1 by user code to route input data from the LIN/BSD interface to both the LIN/BSD hardware timing/synchronization
logic and to the UART RxD (receive data). This mode must be configured by user code when using LIN or BSD modes.
Reserved
These bits are reserved and should be written as 0 by user code
GPIO_8 Function Select Bit
This bit is cleared by user code to 0 to configure the GPIO_8 pin as a General Purpose I/O (GPIO) pin
This bit is set by user code to 1 to route the LIN/BSD input data to the GPIO_8 pin. This mode can be used to drive the LIN transceiver
interface as a standalone component without any interaction from MCU or UART.
Reserved
These bits are reserved and should be written as 0 by user code
GPIO_7 Function Select Bit
This bit is cleared by user code to 0 to configure the GPIO_7 pin as a General Purpose I/O (GPIO) pin
This bit is set by user code to 1 to route data driven into the GPIO_7 pin through the on-chip LIN transceiver to be output at the
LIN/BSD pin. This mode can be used to drive the LIN transceiver interface as a standalone component without any interaction from
MCU or UART.
GP2CON
0xFFFF0D08
0x01000000
Read/Write
The 32-bit MMR selects the pin function for each Port2 pin.
Rev. PrE | Page 98 of 150
Preliminary Technical Data