Texas Instruments TUSB9261 Demonstration & Reference Design TUSB9261DEMO TUSB9261DEMO Datenbogen
Produktcode
TUSB9261DEMO
SLLU139 – February 2011
Default GPIO/PWM Configures States
shows the factory default programmed settings for the GPIO and PWM terminals used on the
PDK.
Table 2. Table 2. GPIO and PWM Factory Default Settings
GPIO
LED NO.
DEFAULT FUNCTION
DESCRIPTION
0
D1
SW_HB
Software Heartbeat: Flashes to indicate firmware is executing
1
D4
PWR_STATE_0
Power State bit 0 - See
High Speed / Full Speed Suspend: Indicates when USB2 high
2
D2
HS_FS_SUSPEND#
speed or full speed is in the suspended state
Push Button: Input terminal connected to active low push
3
PBUTTON#
button
4
SELF_PWR
Bus or Self-powered indicator input - HIGH when self-powered
5
D7
PWR_STATE_1
Power State bit 1 - See
High Speed / Full Speed Connect: Indicates when a high
6
D5
HS_FS_CONNECT#
speed or full speed connection is established
SuperSpeed Connect: Indicates when a SuperSpeed
7
D8
SS_CONNECT#
connection has been established
8
UART Tx
Debug port is not pinned out on the TUSB9261DEMO.
9
UART Rx
Debug port is not pinned out on the TUSB9261DEMO.
Used to control power to SATA connector via option resistors
10
SATA_EN
R34 and R35.
11
FAULT#
Indicates a power fault
PWM
LED NO.
DEFAULT FUNCTION
DESCRIPTION
Disk Activity and Device ON (blink rate varies depending on
0
D3
HDD_ACT#
USB connection speed)
1
D6
MISC_LED0#
Table 3. Link Power Status
GPIO1
GPIO5
LINK POWER STATUS
Off
Off
U0: Active
On
Off
U1: Idle, fast exit
Off
On
U2: Idle, slow Exit
On
On
U3: Suspend
14
Default GPIO/PWM Configures States
SLLU139 – February 2011
© 2011, Texas Instruments Incorporated