F75121RG datasheet(13/45 Pages) FINTEK

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July, 2007

V0.24P

7.2 Status Register – Index 02h

Power-on default [7:0] =0000_000xb

Bit

Name

R/W

PWR

Description

7-4

Reserved

VSB3V

POWR_DOWN

VSB3V

If this bit is set to 1, it mean the chip is in power down mode

FUNC_SEL

VSB3V

VID and GPIO function select. This is dedicated pin.

if input value is

1(external pull-down 10K), the function is selected to VID. Otherwise, the

input value is 0, the function is selected to GPIO.

I2C_ADDR

VSB3V

GPIO serial bus address Select. Internal pull-down 100K ohms are address

0x9C. If external is pull-up 10K ohms, the address is 0x6E. This pin is

trapped during the VSB3VOK.

STS_SLOTOCC

R/W

VBAT

Indicate the SLOTOCC# pin value. This pin will be latched till write this bit

to 1. Writing 0 is invalid.

7.3 Configuration and function select Register – Index 03h

Power-on default [7:0] =0000_0000b

Bit

Name

R/W

PWR

Description

Reserved

VSB3V

IRQ_LEVEL

R/W

VSB3V

Select IRQ Polarity (Level). Set to 1, IRQ is low active and SMI# is high

active. Default, the IRQ is high active and SMI# is low active.

IRQ_MODE

R/W

VSB3V

IRQ/SMI# mode select. 0 – Level mode (IRQ mode), 1 – Pulse Mode

(SMI# mode). If pulse mode is selected, the active pulse is over 100us.

4-3

PIN12_MODE

R/W

VSB3V

00: GPIO12

01: LED12 IN this mode can use REG 0x06(bit5,4) to select LED

frequency.

10: IRQ

11: RSTOUT1#:

PIN11_MODE

R/W

VSB3V

0: GPIO11

1: LED11 IN this mode can use REG 0x06(bit3,2) to select LED

frequency.

1-0

PIN10_MODE

R/W

VSB3V

00: GPIO10

01: LED10 IN this mode can use REG 0x06(bit1,0) to select LED

frequency.

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