RF3000 データシートの表示（PDF） - RF Micro Devices

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RF3000

SPREAD-SPECTRUM BASEBAND MODEM

RF Micro Devices 

RF3000

SPI Operation Summary

To Write:

9. Bring CS low.

10.Chip Address (7-bits) - This should match the RF3000 chip address of 01000002.

11.Read/Write-bit = '0'

12.Auto-Increment-bit - Value of '1' enables auto-increment

13.Memory Address Pointer (MAP) (7-bits) - This is the address of the register to be written to, MSB first.

14.Register Data (8-bits) - MSB First

15.Repeat step 6 if Auto-Increment or bring CS HIGH to end operation.

To Read:

1. Bring CS low.

2. Chip Address (7-bits) - This should match the RF3000 chip address of 01000002.

3. Read/Write-bit = '0'

4. Auto-Increment-bit - Value of '1' enables auto-increment

5. Memory Address Pointer (MAP) (7-bits) - This is the address of the register to be written to, MSB first.

6. Bring CS high.

7. Bring CS low.

8. Chip Address (same as step 2) - MSB First

9. Read/Write-bit = '1'

10. RF3000 will output 8-bit register value, MSB First, and Increment MAP, if Auto increment enabled.

11. Repeat step 10 for polling or Auto-Increment or bring CS high to end operation.

SPI Mode Functional Timing Diagrams

Write

CS

CCLK

CDIN

CDOUT

Chip Address

AI Memory Address

"Hi Z"

Data

Figure 6. SPI Write Functional Timing Diagram

Read

CS

CCLK

CDIN

CDOUT

Chip Address

Memory Address

"Hi Z"

Figure 7. SPI Read Functional Timing Diagram

Chip Address

Data

Data

"Hi Z"

11-330

Rev A4 031216

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