Datasheet MAX4562, MAX4563 (Maxim) - 10
| Fabricante | Maxim |
| Descripción | Serially Controlled, Clickless Audio/Video Switches |
| Páginas / Página | 16 / 10 — Serially Controlled, Clickless Audio/Video Switches. Detailed … |
| Formato / tamaño de archivo | PDF / 224 Kb |
| Idioma del documento | Inglés |
Serially Controlled, Clickless Audio/Video Switches. Detailed Description. MAX4562/MAX4563
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Serially Controlled, Clickless Audio/Video Switches Detailed Description
transition is slowed to avoid the audible “clicking” that can occur when switches are used to route audio sig- The MAX4562/MAX4563 are serial-interface controlled nals. In hard mode, the switches are not slowed down, switches with soft-mode “clickless” and hard-mode oper- making this mode useful when a faster response is ating capability. The MAX4562/MAX4563 contain two required. If a new command is issued while any soft- SPST switches and two SPDT switches. The SPDT mode switch is transitioning, the switch transition time is switches are actually 2-to-1 multiplexers, in that each decreased so it reaches its final state before the new SPDT is really two independent SPST switches with a command is executed. Soft mode and open are the common node, as shown in the Pin Configuration. Each power-up default states for all switches. Switches in the switch is controlled independently by either the 2-wire same mode are guaranteed to be break-before-make I2C-compatible or 3-wire SPI/QSPI/MICROWIRE-compat- relative to each other. Break-before-make does not apply ible serial interface. between switches operating in different modes. Audio off-isolation and crosstalk is -85dB at 20kHz. These devices operate from a +2.7V to +5.5V single Video off-isolation and crosstalk is at least -55dB at supply. The MAX4562 features a 2-wire I2C-compatible 10MHz. serial interface, and the MAX4563 features a 3-wire Each switch of either device may be set to operate in SPI/QSPI/MICROWIRE-compatible serial interface. either soft or hard mode. In soft mode, the switching
MAX4562/MAX4563
70% 70% 70% 70% 70% SDA 20% 20% 20% 20% 20% t t BUF SU, DAT tSU, STA tHD, STA t t LOW tHD, DAT SU, STO 70% 70% 70% 70% 70% 70% SCL 20% 20% 20% tHIGH tHD, STA tR tF START CONDITION REPEATED START CONDITION STOP CONDITION START CONDITION Figure 3. 2-Wire Serial-Interface Timing Diagram SLAVE ADDRESS BYTE COMMAND BYTE SDA MSB LSB ACK MSB LSB ACK SCL START CONDITION STOP CONDITION Figure 4. A Complete 2-Wire Serial-Interface Transmission
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transition is slowed to avoid the audible “clicking” that can occur when switches are used to route audio sig- The MAX4562/MAX4563 are serial-interface controlled nals. In hard mode, the switches are not slowed down, switches with soft-mode “clickless” and hard-mode oper- making this mode useful when a faster response is ating capability. The MAX4562/MAX4563 contain two required. If a new command is issued while any soft- SPST switches and two SPDT switches. The SPDT mode switch is transitioning, the switch transition time is switches are actually 2-to-1 multiplexers, in that each decreased so it reaches its final state before the new SPDT is really two independent SPST switches with a command is executed. Soft mode and open are the common node, as shown in the Pin Configuration. Each power-up default states for all switches. Switches in the switch is controlled independently by either the 2-wire same mode are guaranteed to be break-before-make I2C-compatible or 3-wire SPI/QSPI/MICROWIRE-compat- relative to each other. Break-before-make does not apply ible serial interface. between switches operating in different modes. Audio off-isolation and crosstalk is -85dB at 20kHz. These devices operate from a +2.7V to +5.5V single Video off-isolation and crosstalk is at least -55dB at supply. The MAX4562 features a 2-wire I2C-compatible 10MHz. serial interface, and the MAX4563 features a 3-wire Each switch of either device may be set to operate in SPI/QSPI/MICROWIRE-compatible serial interface. either soft or hard mode. In soft mode, the switching
MAX4562/MAX4563
70% 70% 70% 70% 70% SDA 20% 20% 20% 20% 20% t t BUF SU, DAT tSU, STA tHD, STA t t LOW tHD, DAT SU, STO 70% 70% 70% 70% 70% 70% SCL 20% 20% 20% tHIGH tHD, STA tR tF START CONDITION REPEATED START CONDITION STOP CONDITION START CONDITION Figure 3. 2-Wire Serial-Interface Timing Diagram SLAVE ADDRESS BYTE COMMAND BYTE SDA MSB LSB ACK MSB LSB ACK SCL START CONDITION STOP CONDITION Figure 4. A Complete 2-Wire Serial-Interface Transmission
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