L9963E datasheet(28/184 Pages) STMICROELECTRONICS

Part #	L9963E

Description	Automotive Multicell battery monitoring and balancing IC

PDF	184 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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28 / 184 page

Figure 13. Single read access

Frame fields are described in the table below:

Table 20. Single access frames field description

Field

Length

Value

Description

P.A.

1 bit

Answer sent by any Slave unit (MISO)

Command sent by Master unit (MOSI)

R/W

1 bit

Read

Write

Dev ID

5 bit

From 0x1 to 0x1F

Identifies the x-th L9963E unit in a daisy chain

Address

7 bit

From 0x00 to 0x5F

Identifies the y-th register of the device

Address

feedback

GSW

2 bit

From 0x0 to 0x3

Refer to Section 4.2.4.5 Global Status Word (GSW)

DATA WRITE

18 bit

Depends on the register

Data to be written in the y-th register of the x-th device. It is discarded

in case of READ command.

CRC

6 bit

From 0x00 to 0x3F

CRC calculated on the [39-7] field of the frame. Refer to

Section 4.2.4.6 CRC calculation

Burst

1 bit

Answer to a single access command

DATA READ

18 bit

Depends on the register

Answer containing the data read from the y-th register of the y-th

device

L9963E

Serial communication interface

DS13636 - Rev 12

page 28/184

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