ACT8600 datasheet(36/50 Pages) ACTIVE-SEMI

36 / 50 page

ACT8600

Rev 3, 15-Nov-12

Innovative Power

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

2CTM is a trademark of NXP.

- 36 -

www.active-semi.com

2C Interface

The ACT8600 features an I2C interface that allows

advanced programming capability to enhance overall

system performance. To ensure compatibility with a

wide range of system processors, the I2C interface

supports clock speeds of up to 400kHz (“Fast-Mode”

operation) and uses standard I2C commands. I2C

write-byte commands are used to program the

ACT8600, and I2C read-byte commands are used to

read the ACT8600’s internal registers. The ACT8600

always operates as a slave device, and is addressed

using a 7-bit slave address followed by an eighth bit,

which indicates whether the transaction is a read-

operation or a write-operation, [1011010x].

SDA is a bi-directional data line and SCL is a clock

input. The master device initiates a transaction by

issuing a START condition, defined by SDA

transitioning from high to low while SCL is high. Data

is transferred in 8-bit packets, beginning with the

MSB, and is clocked-in on the rising edge of SCL.

Each packet of data is followed by an “Acknowledge”

(ACK) bit, used to confirm that the data was

transmitted successfully.

For more information regarding the I2C 2-wire serial

interface, go to the NXP website: http://www.nxp.com.

Interrupt Service Routine

The ACT8600 has number of interrupt trigger sources

to simplify the customer interrupt service routine, the

ACT8600 features a Interrupt Service Routine

function as follow: Once the nIRQ asserts low, the

CPU can read the 0xC1 byte to determine the source

that asserts the interrupt. The CPU then reads the

interrupt –related bit(s) within the source located at

generated the interrupt then serve it. If there are

multiple interrupts and pending, the cycle repeats until

all the interrupts are served. The Global Interrupt

Address is shown as Table 2.

Table 2:

Global Interrupt Address

Housekeeping Functions

Programmable System Voltage Monitor

The ACT8600 features a programmable system-

voltage monitor, which monitors the voltage at VSYS

and compares it to a programmable threshold

voltage. The VSYSMON comparator is designed to

be immune to VSYS noise resulting from switching,

load transients, etc. The VSYSMON comparator is

disable by default; to enable it, set the SYSLEV[3:0]

there is a 200mV hysteresis between the rising and

falling

threshold

for

the

comparator.

The

VSYSDAT [-] bit reflects the output of the VSYSMON

comparator. The value of VSYSDAT[ ] is 1 when

VVSYS < SYSLEV; value is 0 otherwise.

The VSYSMON comparator can generate an

interrupt when VVSYS is lower than SYSLEV[ ]

voltage. The interrupt is masked by default by can be

unmasked by setting nSYSLEVMSK[ ] = 1.

FUNCTIONAL DESCRIPTION

0xC1 Value

Interrupt

Source

Interrupt

Address

0x00

SYSTEM

0x00

0x10

REG1

0x12

0x20

REG2

0x22

0x30

REG3

0x32

0x50

REG5

0x51

0x60

REG6

0x61

0x70

REG7

0x71

0x80

REG8

0x81

0xA0

APCH

0xA8, 0xA9

0xB0

OTG

0xB0, 0xB2

ACT8600 bảng dữ liệu(PDF) 36 Page - Active-Semi, Inc

ACT8600 bảng dữ liệu(HTML) 36 Page - Active-Semi, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

bảng dữ liệu tải về

Link URL