W83301R Datasheet, PDF (5/16 Pages) Winbond – ACPI-STR Controller

W83301R
4.Pin Description
Preliminary
SYMBOL
STR_DRV2/BT_DRV
STR_SEN2/BT_SEN
STR_DRV3/BT_SINK
STR_SEN3
GND
Vcc
C1
C2
ChrPmp
5V_DLEN#
S5#
S3#
V_SET1
V_SET0
5V_DLSB
5V_DRV
PWOK
SS
STR_SEN1
STR_DRV1
PIN
FUNCTION
Mode A: BT Current Source. Connect this pin to the gate of a suitable N-channel
1
MOSFET for driving bus termination regulator output.
Mode B: STR2 Driver. Connect this pin to the gate of a suitable N-channel
MOSFET for driving STR2 output.
2
Mode A: BT Sense. Connect this pin to the bus termination regulator output.
Mode B: STR2 Sense. Connect this pin to the STR2 output.
Mode A: BT Current Sink. This pin is used to drive a N-channel MOSFET to sink
3 ^{the redundant current in the high-speed bus.}
Mode B: STR3 Driver. Connect this pin to the gate of a suitable N-channel
MOSFET for driving STR3 output.
Mode A: Function Reserved. Pull up this pin to +5VSB through a 1.5 Kohm
4 ^resistor.
Mode B: STR3 Sense. Connect this pin to the STR3 output.
5 Power Ground. Connect this pin to ground.
6 Power Vcc. Input 5VSB supply.
7
Charge Pump Cap. Attach flying capacitor between this pin and C2 to generate
internally used high voltage from 5V power supply.
8
Charge Pump Cap. Attach flying capacitor between this pin and C1 to generate
internally used high voltage from 5V power supply.
9
Charge Pump output. This pin produces voltage doubled 5V supply by charge-
pumping. Bypass with a 0.1uF capacitor.
10 5VDL Enable. Control 5V_DL voltage output. Pull-up internally.
11 S5 Status. Control signal governing the soft off state S5. Pull-up internally.
12 S3 Status. Control signal governing the soft off state S3. Pull-up internally.
13
Voltage Selection 1. Combine with VSET2 to select operation mode and output
voltages of STR regulators.
14
Voltage Selection 0. Combine with VSET1 to select operation mode and output
voltages of STR regulators.
15
5VSB Output Control. Connect this pin to the gate of a N-MOSFET to output
5VSB power to 5V_DL.
16
5V Output Control. Connect this pin to the gate of a N-MOSFET to output 5V
power to 5V_DL.
Power OK. Open collector input/output. Used to indicate the ready of 5Vin supply. If
17 any STR supply (only STR1 in mode A) occurs over current and induce under-
voltage, PWOK will be pull down.
Soft-Start. Attach a capacitor (0.033u) to this pin to determine the softstart rate. A
18
ramp generated by charging this capacitor with internal soft-start current (18uA) is
used to clamp the voltage rising slew rate of STR regulators and 5V_DL. Soft starting
avoids too much rush current during voltage setup.
19 STR1 Sense. Connect this pin to the STR1 output.
20
STR1 Driver. Connect this pin to the gate of a suitable N-channel MOSFET for
driving STR1 output.
Confidential
3
Revision 0.6