HOST

DISPLAY DRIVER

FPD95320

SDO

CSX

SCL

SDO

CSX

SCL

SDI

LM2512A

C

O

N

N

SDI

HOST

DISPLAY DRIVER

FPD95320

C

O

N

N

SDA

CSX

SCL

SDO

CSX

SCL

SDI

LM2512A

LM2512A

www.ti.com

SNLS269B – AUGUST 2007 – REVISED MAY 2013

Table 4. PAGE WRITE

Bit

B15

B14

B13

B12

B11

B10

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

SDA

0

A6

A5

A4

A3

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

(start address)

(Data Byte 0)

D7

D6

D5

D4

D3

D2

D1

D0

D7

D6

D5

D4

D3

D2

D1

D0

(Data Byte 1)

(Data Byte n, 256 max.)

There are three SPI Interface signals: CSX - SPI Chip Select, SCL - SPI Clock, and SDA - SPI Data. CSX and

SCL are inputs on the LM2512A. SDA is a bi-directional Data line and is an input for a WRITE and an output for

the READ_DATA portion of a READ operation. READs are optional and are not required. Due to the

Select/Unlock – De-Select/Lock feature of the device the SPI interface may be shared with the display driver.

Several connection configurations are possible. A couple examples are shown in Figure 13 and Figure 14.

Figure 13. LM2512A WRITE & READ to 3-signal SPI HOST

Figure 14. LM2512A WRITE only to 4-signal SPI HOST

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