ata6616 ATMEL Corporation, ata6616 Datasheet - Page 98

• Manufacturer Part Number: ata6616
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

98
ATA6616/ATA6617 [Preliminary]
Table 4-22
ure 4-29
in the modules having the alternate function.
Table 4-22.
The following subsections shortly describe the alternate functions for each port, and relate the
overriding signals to the alternate function. Refer to the alternate function description for further
details.
Signal Name
DIEOE
DIEOV
PUOE
DDOE
DDOV
PUOV
PVOE
PVOV
PTOE
AIO
DI
are not shown in the succeeding tables. The overriding signals are generated internally
summarizes the function of the overriding signals. The pin and port indexes from
Generic Description of Overriding Signals for Alternate Functions
Port Toggle Override
Analog Input/Output
Port Value Override
Port Value Override
Digital Input Enable
Digital Input Enable
Pull-up Override
Pull-up Override
Override Enable
Override Enable
Override Value
Override Value
Data Direction
Data Direction
Digital Input
Full Name
Enable
Enable
Enable
Value
Value
Description
If this signal is set, the pull-up enable is controlled by the PUOV
signal. If this signal is cleared, the pull-up is enabled when
{DDxn, PORTxn, (PUD or PDUx)} = 0, 1, 0.
If PUOE is set, the pull-up is enabled/disabled when PUOV is
set/cleared, regardless of the setting of the DDxn, PORTxn, PUD
and PUDx Register bits.
If this signal is set, the Output Driver Enable is controlled by the
DDOV signal. If this signal is cleared, the Output driver is enabled
by the DDxn Register bit.
If DDOE is set, the Output Driver is enabled/disabled when
DDOV is set/cleared, regardless of the setting of the DDxn
Register bit.
If this signal is set and the Output Driver is enabled, the port
value is controlled by the PVOV signal. If PVOE is cleared, and
the Output Driver is enabled, the port Value is controlled by the
PORTxn Register bit.
If PVOE is set, the port value is set to PVOV, regardless of the
setting of the PORTxn Register bit.
If PTOE is set, the PORTxn Register bit is inverted.
If this bit is set, the Digital Input Enable is controlled by the DIEOV
signal. If this signal is cleared, the Digital Input Enable is
determined by MCU state (Normal mode, sleep mode).
If DIEOE is set, the Digital Input is enabled/disabled when DIEOV
is set/cleared, regardless of the MCU state (Normal mode, sleep
mode).
This is the Digital Input to alternate functions. In the figure, the
signal is connected to the output of the Schmitt Trigger but before
the synchronizer. Unless the Digital Input is used as a clock
source, the module with the alternate function will use its own
synchronizer.
This is the Analog Input/output to/from alternate functions. The
signal is connected directly to the pad, and can be used
bi-directionally.
DRAFT
9132A–AUTO–10/08
Fig-