JAJSE97D June   2017  – May 2019 DAC8740H , DAC8741H

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      概略回路図
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
    1.     Pin Functions: DAC8740H
    2.     Pin Functions: DAC8741H
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  HART Modulator
      2. 9.3.2  HART Demodulator
      3. 9.3.3  FOUNDATION Fieldbus or PROFIBUS PA Manchester Encoder
      4. 9.3.4  FOUNDATION Fieldbus or PROFIBUS PA Manchester Decoder
      5. 9.3.5  Internal Reference
      6. 9.3.6  Clock Configuration
      7. 9.3.7  Reset and Power-Down
      8. 9.3.8  Full-Duplex Mode
      9. 9.3.9  I/O Selection
      10. 9.3.10 Jabber Inhibitor
    4. 9.4 Device Functional Modes
      1. 9.4.1 UART Interfaced HART
      2. 9.4.2 UART Interfaced FOUNDATION Fieldbus or PROFIBUS PA
      3. 9.4.3 SPI Interfaced HART
      4. 9.4.4 SPI Interfaced FOUNDATION Fieldbus or PROFIBUS PA
      5. 9.4.5 Digital Interface
        1. 9.4.5.1 UART
          1. 9.4.5.1.1 UART Carrier Detect
        2. 9.4.5.2 SPI
          1. 9.4.5.2.1 SPI Cyclic Redundancy Check
          2. 9.4.5.2.2 SPI Interrupt Request
    5. 9.5 Register Maps
      1. 9.5.1 CONTROL Register (Offset = 2h) [reset = 0x8042]
        1. Table 9. CONTROL Register Field Descriptions
      2. 9.5.2 RESET Register (Offset = 7h) [reset = 0x0000]
        1. Table 10. RESET Register Field Descriptions
      3. 9.5.3 MODEM_STATUS Register (Offset = 20h) [reset = 0x0000]
        1. Table 11. MODEM_STATUS Register Field Descriptions
      4. 9.5.4 MODEM_IRQ_MASK Register (Offset = 21h) [reset = 0x0024]
        1. Table 12. MODEM_IRQ_MASK Register Field Descriptions
      5. 9.5.5 MODEM_CONTROL Register (Offset = 22h) [reset = 0x0048]
        1. Table 13. MODEM_CONTROL Register Field Descriptions
      6. 9.5.6 FIFO_D2M Register (Offset = 23h) [reset = 0x0200]
        1. Table 14. FIFO_D2M Register Field Descriptions
      7. 9.5.7 FIFO_M2D Register (Offset = 24h) [reset = 0x0200]
        1. Table 15. FIFO_M2D Register Field Descriptions
      8. 9.5.8 FIFO_LEVEL_SET Register (Offset = 25h) [reset = 0x0000]
        1. Table 16. FIFO_LEVEL_SET Register Field Descriptions
      9. 9.5.9 PAFF_JABBER Register (Offset = 27h) [reset = 0x0000]
        1. Table 17. PAFF_JABBER Register Field Descriptions
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Design Recommendations
      2. 10.1.2 Selecting the Crystal or Resonator
      3. 10.1.3 Included Functions and Filter Selection
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 DAC8740H HART Modem
        2. 10.2.2.2 2-Wire Current Loop
        3. 10.2.2.3 Regulator
        4. 10.2.2.4 DAC
        5. 10.2.2.5 Amplifiers
        6. 10.2.2.6 Diodes
        7. 10.2.2.7 Passives
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13デバイスおよびドキュメントのサポート
    1. 13.1 ドキュメントのサポート
      1. 13.1.1 関連資料
    2. 13.2 関連リンク
    3. 13.3 ドキュメントの更新通知を受け取る方法
    4. 13.4 コミュニティ・リソース
    5. 13.5 商標
    6. 13.6 静電気放電に関する注意事項
    7. 13.7 Glossary
  14. 14メカニカル、パッケージ、および注文情報

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

9.5.6 FIFO_D2M Register (Offset = 23h) [reset = 0x0200]

This register interfaces the FIFO that transmits data from the digital interface to the modem.

FIFO_D2M is shown in Figure 28 and described in Table 14.

Return to Summary Table.

Figure 28. FIFO_D2M Register
15 14 13 12 11 10 9 8
FIFO_LEVEL LEVEL_FLAG FULL_FLAG EMPTY_FLAG PARITY_BIT
R R R R W
7 6 5 4 3 2 1 0
DATA
W

Table 14. FIFO_D2M Register Field Descriptions

Bit Field Type Reset Description
15-12 FIFO_LEVEL R 0 Reads back the current level of the FIFO, read only
11 LEVEL_FLAG R 0 Indicates the programmed level has been reached, read only
10 FULL_FLAG R 0 Indicates the FIFO is full, read only
9 EMPTY_FLAG R 1 Indicates the FIFO is empty, read only
8 PARITY_BIT W 0 Odd parity for 8-bit data read on bus, write only
7-0 DATA W 0 Data transmitted from the digital interface to the modem, write only