ELANSC410-33AC AMD (ADVANCED MICRO DEVICES), ELANSC410-33AC Datasheet - Page 51

• Manufacturer Part Number: ELANSC410-33AC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ELANSC410-33AC

• Lead Free Status / Rohs Status: Not Compliant

Notes:
1. The data buffer control signals are shared with the GPIO_CS4–GPIO_CS2 signals and with the keyboard row signal:
2. This data buffer control signal (R32BFOE) is shared with the keyboard row signal:
Signal Name
[Alternate
Function]
GPIO_CS2
[[DBUFRDL]]
GPIO_CS3
[[DBUFRDH]]
GPIO_CS4
[[DBUFOE]]
KBD_ROW13
[[R32BFOE]]
When the data buffer control signals are enabled on the pins, they will drive inactive during Suspend mode, go three-state
without resistors to allow an external resistor to 5 V, or three-state with a pulldown to support powering off the data buffer.
Summary: GPIO_CS4–GPIO_CS2/DBUFOE/DBUFRDH/DBUFRDL: Built-in pullup and pulldown resistors that are invoked by:
When the data buffer control signals are enabled on the pins, they will drive inactive during Suspend mode, go three-state
without resistors to allow an external resistor to 5 V, or three-state with a pulldown to support powering off the data buffer.
Summary: KBD_ROW13/R32BFOE: Built-in pullup and pulldown resistors that are invoked by:
–Reset invokes pullup.
–When buffer control is invoked by the configuration pin, these pins are outputs without any pullups or pulldowns.
–When buffer control is enabled and in Suspend mode, DBUFRDH and DBUFRDL are three-state with the pulldowns
–When enabled as the GPIO_CS4–GPIO_CS2 signals:
–Reset invokes the pullup.
–As R32BFOE, this pin is an output without a pullup or pulldown.
–When buffer control is enabled and in Suspend mode, R32BFOE has three options:
–When enabled as the keyboard row signal, this signal has a pullup enabled at all times.
enabled; DBUFOE has three options:
•High (inactive) with no pullup or pulldown.
•Three-state with a pulldown if it is programmed for the buffer to be powered off in Suspend mode (Power-Down Group I).
•Three-state with no pulldown if it is programmed for the buffer to be powered on in Suspend mode and at 5 V.
•As an output, the pullup and pulldown are disabled in all modes, and these GPIO_CS signals can be active in Suspend.
•As an input, the pullup can be programmed to be enabled or disabled. This will then be the state of the pin in all
•High (inactive) with no pullup or pulldown.
•Three-state with a pulldown if it is programmed for the buffer to be powered off in Suspend mode.
•Three-state with no pulldown if it is programmed for the buffer to be powered on in Suspend mode and at 5 V.
modes, including Suspend.
C18
D17
Pin
C4
A3
#
Table 10. Pin State Table—GPIOs/System Data (SD) Buffer Control
STI-OD
Type
[[O]]
[[O]]
[[O]]
[O]
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
B
B
B
Output
Drive
C
C
C
C
Load
Max
(pF)
250
50
50
50
Supply
V
V
V
V
CC
CC
CC
CC
Reset
State
I-PU
I-PU
I-PU
I-PU
Operation
I-PPU[O]
I-PPU[O]
I-PPU[O]
Normal
IOD-PU
O
O
O
O
H[TS-PD][TS]
H[TS-PD][TS]
Suspend
I-PPU[O]
I-PPU[O]
I-PPU[O]
TS-PD
TS-PD
State
I-PU
Power
Group
Down
I
I
Note
1
1
1
2
5 V
51
S
S