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MAX3301E Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX3301E Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 35 page USB On-the-Go Transceivers and Charge Pumps _______________________________________________________________________________________ 9 Pin Description PIN MAX3302E 28-PIN TQFN MAX3301E 32-PIN TQFN UCSP NAME FUNCTION 12 D2 DAT_VP System-Side Data Input/Output. DAT_VP is an input if OE/INT is logic 0. DAT_VP is an output if OE/INT is logic 1. Program the function of DAT_VP with the dat_se0 bit (bit 2 of control register 1, see Table 7). 2, 25 3, 29 D1, E3 VCC Input Power Supply. Connect a +3V to +4.5V supply to VCC and bypass to GND with a 1µF capacitor. The supply range enables direct powering from one Li+ battery. 3, 9, 23 1, 4, 9, 12, 17, 25, 28 —N.C. No Connection. Not internally connected. 45 C1 C- Charge-Pump Flying-Capacitor Negative Terminal 56 C2 SE0_VM System-Side Data Input/Output. SE0_VM is an input if OE/INT is logic 0. SE0_VM is an output if OE/INT is logic 1. Program the function of SE0_VM with the dat_se0 bit (bit 2 of control register 1, see Table 7). 6, 18 7, 21 B1, C5 GND Ground 78 A1 SDA I2C-Compatible Serial Data Interface. Open-drain data input/output. 810 B2 SCL I2C-Compatible Serial Clock Input 10 11 A2 OE/INT Output Enable. OE/INT controls the input or output status of DAT_VP/SE0_VM and D+/D-. When OE/INT is logic 0, the device is in transmit mode. When OE/INT is logic 1, the device is in receive mode. When in suspend mode, OE/INT can be programmed to function as an interrupt output that detects the same interrupts as INT. The oe_int_en bit (bit 5 of control register 1, see Table 7) enables and disables the interrupt circuitry of OE/INT. The irq_mode bit (bit 1 of special-function register 2, see Table 15) programs the output configuration of INT and OE/INT as open-drain or push-pull. 11 13 A3 RCV D+ and D- Differential Receiver Output. In receive mode (see Table 4), when D+ is high and D- is low, RCV is high. In receive mode, when D+ is low and D- is high, RCV is low. RCV is low in suspend mode. 12 14 B3 SPD Speed-Selector Input. Connect SPD to GND to select the low-speed data rate (1.5Mbps). Connect SPD to VL to select the full-speed data rate (12Mbps). Disable the SPD input by writing a 1 to spd_susp_ctl (bit 1 in special-function register 1, see Table 14). The speed bit (bit 0 of control register 1, see Table 7) determines the maximum data rate of the MAX3301E/MAX3302E when the SPD input is disabled. 13 15 A4 VL System-Side Logic-Supply Input. Connect to the system’s logic-level power supply, +1.65V to +3.6V. This sets the maximum output levels of the logic outputs and the input thresholds of the logic inputs. Bypass to GND with a 0.1µF capacitor. 14 16 A5 SUS Active-High Suspend Input. Drive SUS low for normal USB operation. Drive SUS high to enable suspend mode. RCV asserts low in suspend mode. Disable the SUS input by writing a 1 to spd_susp_ctl (bit 1 in special-function register 1, see Table 14). The suspend bit (bit 1 of control register 1, see Table 7) determines the operating mode of the MAX3301E/MAX3302E when the SUS input is disabled. |
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