AD9985ABSTZ-110 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD9985ABSTZ-110

110 MSPS/140 MSPS Analog Interface for Flat Panel Displays

Analog Devices 

AD9985A

Serial Interface Read/Write Examples

Write to one control register:

1. Start signal

2. Slave address byte (R/W Bit = low)

3. Base address byte

4. Data byte to base address

5. Stop signal

Write to four consecutive control registers:

1. Start signal

2. Slave address byte (R/W bit = low)

3. Base address byte

4. Data byte to base address

5. Data byte to (base address + 1)

6. Data byte to (base address + 2)

7. Data byte to (base address + 3)

8. Stop signal

Read from one control register:

1. Start signal

2. Slave address byte (R/W bit = low)

3. Base address byte

4. Start signal

5. Slave address byte (R/W bit = high)

6. Data byte from base address

7. Stop signal

Read from four consecutive control registers:

1. Start signal

2. Slave address byte (R/W bit = low)

3. Base address byte

4. Start signal

5. Slave address byte (R/W Bit = high)

6. Data byte from base address

7. Data byte from (base address + 1)

8. Data byte from (base Address + 2)

9. Data byte from (base Address + 3)

10. Stop signal

SDA

SCL

BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 ACK

Figure 13. Serial Interface—Typical Byte Transfer

SOG

HSYNC IN

SYNC STRIPPER

NEGATIVE PEAK

CLAMP

ACTIVITY

DETECT

COAST

VSYNC IN

ACTIVITY

DETECT

POLARITY

DETECT

ACTIVITY

DETECT

COMP

SYNC

MUX 1

SYNC SEPARATOR

INTEGRATOR

1/S

VSYNC

SOG OUT

PLL

POLARITY

DETECT

HSYNC

MUX 2

COAST

CLOCK

GENERATOR

HSYNC OUT

PIXEL CLOCK

HSYNC OUT

MUX 3

POLARITY

DETECT

AD9985A

MUX 4

VSYNC OUT

Figure 14. Sync Processing Block Diagram

Rev. 0 | Page 27 of 32

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