SPEAR-09-B042 datasheet(17/66 Pages) STMICROELECTRONICS

17 / 66 page

SPEAR-09-B042

Pins description

17/66

DDR_DATA_9

T16

DDR_DATA_10

U17

DDR_DATA_11

U16

DDR_DATA_12

U14

DDR_DATA_13

U13

DDR_DATA_14

T13

DDR_DATA_15

R13

DDR_DQS_1

U15

I/O

Upper data strobe

Differential

SSTL_2/SSTL_18

DDR_nDQS_1

T15

DDR_DM_1

T14

I/O

Upper data mask

SSTL_2/SSTL_18

DDR_GATE_1

R14

I/O

Upper gate open

SSTL_2/SSTL_18

DDR_VREF

P10

Input

Reference voltage

Analog

DDR_COMP_GND

Power

Return for external

resistors

Power

DDR_COMP_1V8

Power

External resistor 1.8V

Analog

DDR2_EN

J13

Input

Configuration

TTL input buffer 3.3 V

tolerant, PU

USB

DEV_DP

I/O

USB device D+

Bidirectional analog buffer 5V

tolerant

DEV_DM

USB device D-

DEV_VBUS

Input

USB device VBUS

TTL Input buffer 3.3 V

tolerant, PD

HOST1_DP

I/O

USB HOST1 D+

Bidirectional analog buffer 5V

tolerant

HOST1_DM

USB HOST1 D-

HOST1_VBUS

Output

USB HOST1 VBUS

TTL output buffer 3.3 V

capable, 4mA

HOST1_OVRC

Input

USB host1 over-current

TTL input buffer 3.3 V

tolerant, PD

HOST0_DP

I/O

USB HOST0 D+

Bidirectional analog

buffer 5v tolerant

HOST0_DM

USB HOST0 D-

HOST0_VBUS

Output

USB HOST0 VBUS

TTL Output Buffer 3.3 V

capable, 4mA

HOST0_OVRC

Input

USB host0 over-current

TTL input buffer 3.3 V

tolerant, PD

USB_TXRTUNE

Output

Reference resistor

Analog

USB_ANALOG_TE

Output

Analog test output

Analog

Master

Clock

MCLK_XI

Input

Output

24 MHz crystal I

Oscillator 2.5V capable

MCLK_XO

24 MHz crystal O

Table 1.

Pin description by functional group (continued)

Group

Signal name

Ball

Direction

Function

Pin type

SPEAR-09-B042 Datasheet(PDF) 17 Page - STMicroelectronics

SPEAR-09-B042 Datasheet(HTML) 17 Page - STMicroelectronics

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