Datasheet

Microcontroller Unit (MCU)
6−11
SLLS535E − April 2008 TUSB6250
For some removable media reader applications, if the media connector has connector detection pins at two
opposite sides of the connector (for example, card reader application for compact flash card or PCMCIA type
II card/drive), both CD1STEN and CD2STEN must be enabled to ensure correct detection of media insertion.
The MCUCNFG register is cleared by a power-up reset or a WDT reset. A USB reset cannot reset the
MCUCNFG register.
76543210
RSV RSV CD2STEN CD1STEN P35STEN P34STEN RSV APP_MODE
R/O R/O R/W R/W R/W R/W R/O R/W
BIT
NAME RESET FUNCTION
0 APP_MODE 0 Application mode. This bit indicates whether the device is running under boot code or firmware
control. The firmware should take extra care and never clear this bit.
APP_MODE = 0 The TUSB6250 is running in the boot sequence mode.
APP_MODE = 1 The TUSB6250 is running under firmware control.
1 RSV 0 Reserved
2 P34STEN 0 P3.4 status change detection enable.
P34STEN = 0 Disable pin P3.4 status change detection
P34STEN = 1 Enable pin P3.4 status change detection
3 P35STEN 0 P3.5 status change detection enable.
P35STEN = 0 Disable pin P3.5 status change detection
P35STEN = 1 Enable pin P3.5 status change detection
4 CD1STEN 0 Card/media detection−1 enable.
CD1STEN = 0 Disable card/media CD1
status detection
CD1STEN = 1 Enable card/media CD1
status detection
5 CD2STEN 0 Card/media detection−2 enable.
CD2STEN = 0 Disable card/media CD2
status detection
CD2STEN = 1 Enable card/media CD2
status detection
7−6 RSV 00 Reserved
6.3.5 PWONSUSP: Power-On Reset and Suspend Detection Register (at ESFR FDh)
The POSP bit of the PWONSUSP register provides a way to let the target ATA/ATAPI device distinguish
between a power-up reset and a remote wakeup (or resume). The MCU can set the POSP bit when it decides
to go into suspend.
The BANKSEL bits are used by the MCU to select one of the eight IDATA memory banks when running in a
multitasking environment to speed up code execution. Figure 6−2 shows the IDATA space multibank memory
configuration map.
The PWONSUSP register is cleared by a power-up reset or a WDT reset. A USB reset cannot reset the
PWONSUSP register.