Datasheet LTC4331 (Analog Devices) - 20
| Fabricante | Analog Devices |
| Descripción | I2C Slave Device Extender Over Rugged Differential Link |
| Páginas / Página | 26 / 20 — Register Naming Conventions. Table 4. Device Address. A1 (Note 1). A2 … |
| Formato / tamaño de archivo | PDF / 243 Kb |
| Idioma del documento | Inglés |
Register Naming Conventions. Table 4. Device Address. A1 (Note 1). A2 (Note 1). DEVICE ADDR (7-Bit). Table 5. Register Map
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LTC4331 APPLICATIONS INFORMATION PEC transfers are recommended in high noise environ-
Register Naming Conventions
ments or high reliability systems. RW Read-Write
Table 4. Device Address
RO Read Only
A1 (Note 1) A2 (Note 1) DEVICE ADDR (7-Bit)
L L 3Eh W0C Write Zero to Clear Float L 3Ch H L 3Fh L Float 3Dh H Float 75h L H 76h Float H 74h H H 77h Float Float Internal Slave Device is Disabled Note 1: For assignments to Float, 0.5 • VL can also be applied to pin.
Table 5. Register Map REGISTER NAME DATA DEFAULT Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
00h CONFIG – – – – – – CTRL_SEL INTR_MODE 0x00 01h STATUS SPEED_IDX Reserved EXT_NALERT NALERT NLINK – 02h EVENT – – – – – FAULT LINK_LOST LINK_GOOD 0x00 03h ALERT_EN – – – – – FAULT_EN LINK_LOST_EN LINK_GOOD_EN 0x00 04h FAULT – – – – TX_BUF_OVERFLOW EXT_I2C_FAULT LINK_FAULT I2C_WRITE_FAULT 0x00 05h SCRATCH SCRATCH 0x08 06h ADDR_TRANS – I2C_TRANS 0x00 07h CTRL – – – – – – – SW_CTRL 0x00
CONFIG Register (RW) FIELD DESCRIPTION
INTR_MODE When low, the internal slave interrupt behavior on pin ALERT is SMBALERT. The internal slave device recognizes and responses to an ARA. When high, the internal slave device ignores the ARA. CTRL_SEL When low, the local CTRL pin input is mirrored to the remote CTRL output pin. When high, the value in register CTRL is used instead.
STATUS (RO) FIELD DESCRIPTION
NLINK The level driven by pin LINK. High impedance is interpreted as 1. NALERT The level driven by the local side pin ALERT. High impedance is interpreted as 1. EXT_NALERT The level driven into the remote ALERT pin. Link must be established. SPEED_IDX <0-8>. Encoded index from values set on SPEED1 and SPEED2. See Table 2. Link Speed. Rev 0 20 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagrams Applications Information Typical Applications Package Description Typical Application Related Parts
Register Naming Conventions
ments or high reliability systems. RW Read-Write
Table 4. Device Address
RO Read Only
A1 (Note 1) A2 (Note 1) DEVICE ADDR (7-Bit)
L L 3Eh W0C Write Zero to Clear Float L 3Ch H L 3Fh L Float 3Dh H Float 75h L H 76h Float H 74h H H 77h Float Float Internal Slave Device is Disabled Note 1: For assignments to Float, 0.5 • VL can also be applied to pin.
Table 5. Register Map REGISTER NAME DATA DEFAULT Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
00h CONFIG – – – – – – CTRL_SEL INTR_MODE 0x00 01h STATUS SPEED_IDX Reserved EXT_NALERT NALERT NLINK – 02h EVENT – – – – – FAULT LINK_LOST LINK_GOOD 0x00 03h ALERT_EN – – – – – FAULT_EN LINK_LOST_EN LINK_GOOD_EN 0x00 04h FAULT – – – – TX_BUF_OVERFLOW EXT_I2C_FAULT LINK_FAULT I2C_WRITE_FAULT 0x00 05h SCRATCH SCRATCH 0x08 06h ADDR_TRANS – I2C_TRANS 0x00 07h CTRL – – – – – – – SW_CTRL 0x00
CONFIG Register (RW) FIELD DESCRIPTION
INTR_MODE When low, the internal slave interrupt behavior on pin ALERT is SMBALERT. The internal slave device recognizes and responses to an ARA. When high, the internal slave device ignores the ARA. CTRL_SEL When low, the local CTRL pin input is mirrored to the remote CTRL output pin. When high, the value in register CTRL is used instead.
STATUS (RO) FIELD DESCRIPTION
NLINK The level driven by pin LINK. High impedance is interpreted as 1. NALERT The level driven by the local side pin ALERT. High impedance is interpreted as 1. EXT_NALERT The level driven into the remote ALERT pin. Link must be established. SPEED_IDX <0-8>. Encoded index from values set on SPEED1 and SPEED2. See Table 2. Link Speed. Rev 0 20 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagrams Applications Information Typical Applications Package Description Typical Application Related Parts