User ManualTable of ContentsChapter 1 Pin Configuration6Figure 1.1 USB2514 36-Pin QFN6Figure 1.2 USB2514 48-Pin QFN7Chapter 2 Block Diagram8Figure 2.1 USB2514 Block Diagram8Chapter 3 Pin Descriptions93.1 PIN Descriptions9Table 3.1 USB2514 Pin Descriptions9Table 3.2 SMBus or EEPROM Interface Behavior15Table 3.3 USB2514 Power, Ground, No Connect163.2 Buffer Type Descriptions16Table 3.4 USB2514 Buffer Type Descriptions16Chapter 4 Configuration Options184.1 4-Port Hub184.1.1 Hub Configuration Options184.1.2 VBus Detect184.2 36 QFN and 48 QFN Feature Differences18Table 4.1 36 QFN and 48 QFN Feature Differences184.3 EEPROM Interface194.3.1 Internal Register Set (Common to EEPROM and SMBus)19Table 4.2 Internal Default, EEPROM and SMBus Register Memory Map19Table 4.3 Port Remap Register for Ports 1 & 232Table 4.4 Port Remap Register for Ports 3 & 4334.3.2 I2C EEPROM344.3.3 In-Circuit EEPROM Programming344.4 SMBus Slave Interface354.4.1 Bus Protocols35Figure 4.1 Block Write35Figure 4.2 Block Read364.4.2 Invalid Protocol Response Behavior364.4.3 General Call Address Response364.4.4 Slave Device Time-Out364.4.5 Stretching the SCLK Signal364.4.6 SMBus Timing364.4.7 Bus Reset Sequence374.4.8 SMBus Alert Response Address374.5 Default Configuration Option:374.6 Default Strapping Options:37Figure 4.3 LED Strapping Option384.7 Reset384.7.1 Internal POR Hardware Reset384.7.2 External Hardware RESET_N38Figure 4.4 Reset_N Timing for Default/Strap Option Mode39Table 4.5 Reset_N Timing for Default/Strap Option Mode39Figure 4.5 Reset_N Timing for EEPROM Mode40Table 4.6 Reset_N Timing for EEPROM Mode40Figure 4.6 Reset_N Timing for SMBus Mode41Table 4.7 Reset_N Timing for SMBus Mode414.7.3 USB Bus Reset41Chapter 5 DC Parameters435.1 Maximum Guaranteed Ratings435.2 Recommended Operating Conditions43Table 5.1 DC Electrical Characteristics44Table 5.2 Pin Capacitance46Chapter 6 AC Specifications476.1 Oscillator/Clock47Figure 6.1 Typical Crystal Circuit47Figure 6.2 Formula to find value of C1 and C2476.1.1 SMBus Interface:476.1.2 I2C EEPROM:476.1.3 USB 2.047Chapter 7 Package Outlines48Figure 7.1 36-Pin QFN, 6x6mm Body, 0.5mm Pitch48Figure 7.2 48-Pin QFN, 7x7mm Body, 0.5mm Pitch49Size: 993 KBPages: 49Language: EnglishOpen manual
User ManualTable of ContentsChapter 1 Pin Configuration6Figure 1.1 USB2514 36-Pin QFN6Figure 1.2 USB2514 48-Pin QFN7Chapter 2 Block Diagram8Figure 2.1 USB2514 Block Diagram8Chapter 3 Pin Descriptions93.1 PIN Descriptions9Table 3.1 USB2514 Pin Descriptions9Table 3.2 SMBus or EEPROM Interface Behavior15Table 3.3 USB2514 Power, Ground, No Connect163.2 Buffer Type Descriptions16Table 3.4 USB2514 Buffer Type Descriptions16Chapter 4 Configuration Options184.1 4-Port Hub184.1.1 Hub Configuration Options184.1.2 VBus Detect184.2 36 QFN and 48 QFN Feature Differences18Table 4.1 36 QFN and 48 QFN Feature Differences184.3 EEPROM Interface194.3.1 Internal Register Set (Common to EEPROM and SMBus)19Table 4.2 Internal Default, EEPROM and SMBus Register Memory Map19Table 4.3 Port Remap Register for Ports 1 & 232Table 4.4 Port Remap Register for Ports 3 & 4334.3.2 I2C EEPROM344.3.3 In-Circuit EEPROM Programming344.4 SMBus Slave Interface354.4.1 Bus Protocols35Figure 4.1 Block Write35Figure 4.2 Block Read364.4.2 Invalid Protocol Response Behavior364.4.3 General Call Address Response364.4.4 Slave Device Time-Out364.4.5 Stretching the SCLK Signal364.4.6 SMBus Timing364.4.7 Bus Reset Sequence374.4.8 SMBus Alert Response Address374.5 Default Configuration Option:374.6 Default Strapping Options:37Figure 4.3 LED Strapping Option384.7 Reset384.7.1 Internal POR Hardware Reset384.7.2 External Hardware RESET_N38Figure 4.4 Reset_N Timing for Default/Strap Option Mode39Table 4.5 Reset_N Timing for Default/Strap Option Mode39Figure 4.5 Reset_N Timing for EEPROM Mode40Table 4.6 Reset_N Timing for EEPROM Mode40Figure 4.6 Reset_N Timing for SMBus Mode41Table 4.7 Reset_N Timing for SMBus Mode414.7.3 USB Bus Reset41Chapter 5 DC Parameters435.1 Maximum Guaranteed Ratings435.2 Recommended Operating Conditions43Table 5.1 DC Electrical Characteristics44Table 5.2 Pin Capacitance46Chapter 6 AC Specifications476.1 Oscillator/Clock47Figure 6.1 Typical Crystal Circuit47Figure 6.2 Formula to find value of C1 and C2476.1.1 SMBus Interface:476.1.2 I2C EEPROM:476.1.3 USB 2.047Chapter 7 Package Outlines48Figure 7.1 36-Pin QFN, 6x6mm Body, 0.5mm Pitch48Figure 7.2 48-Pin QFN, 7x7mm Body, 0.5mm Pitch49Size: 993 KBPages: 49Language: EnglishOpen manual