MAX3301E datasheet(9/35 Pages) MAXIM

Part #	MAX3301E

Description	USB On-the-Go Transceiver and Charge Pump

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Manufacturer	MAXIM [Maxim Integrated Products]

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9 / 35 page

USB On-the-Go Transceivers and Charge Pumps

_______________________________________________________________________________________

9

Pin Description

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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