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AP1302CSSL00SMGAH

GEVB

www.onsemi.com

4

Table 1. JUMPERS AND HEADERS 

(continued)

Jumper/Header No.

Description

Pins

Jumper/Header Name

P14

+VDDIO_HB0_SENSE

1

2 (Default)

Sets Voltage to +1.8 V (Normal Operation)

3

4

Sets Voltage to +2.8 V

5

6

Sets Voltage to +3.3 V

P15

VBLOW

Closed (Default)

Normal Operation

P16

+VDDIO_HEAD Select

2

3 (Default)

When using with the Demo 3 Headboard

1

2

When using with the AP21057 Dual Adapter Board

P17

+VDDIO_HB1_SENSE

1

2 (Default)

Sets Voltage to +1.8 V (Normal Operation)

3

4

Sets Voltage to +2.8 V

5

6

Sets Voltage to +3.3 V

P23

SPI Debug

Open (Default)

SPI Interface Disabled

1

2, 3

4, 5

6, 7

8

SPI Interface Enabled

P24

SPI_LS_EN

Open (Default)

SPI Level-shifter Disabled

1

2

SPI Level-shifter Enabled

SW1

RESET

N/A

When Pushed, 240 ms Reset Signal will be Sent to

AP1302

Interfacing to ON Semiconductor Demo 3 Baseboard

The ON Semiconductor Demo 3 baseboard has a similar

52-pin connector which mates with J1 of the headboard.
The four mounting holes secure the baseboard and the
headboard with spacers and screws.

Shorted Jumpers for Power Measurement

Different supplies to the evaluation board are provided by

trace shorted jumper, for any voltage and power
measurements. To conduct current for current measurement
on a given power rail, cut the trace between the two pins of
their respective JP, and insert an ammeter prior to powering
up the system. The figure below shows where the trace to cut
is located.

Figure 7. Top and Bottom View of Shorted Jumper.

The Bottom View Shows the Trace Location to Cut

for Current Measurement

Cut
Here

Table 2. SHORTED JUMPERS FOR POWER 

MEASUREMENT 

 

Jumper

Voltage (V)

P1, Pin 1 (+5V0_EXT)

5.0

P1, Pin 2 (+5V0)

5.0

P1, Pin 3 (+5V0_HOST)

5.0

TP12 (+1V2)

1.2

TP14 (+1V8)

1.8

TP15 (+HEAD_1V8)

1.8

TP16 (+3V3)

3.3

TP17 (+2V8_VAA)

2.8

TP19 (+2V8_VDDIO)

2.8

TP21 (+VDDIO_HB0_LS)

1.8/2.8/3.3

TP23 (+VDDIO_HB1_LS)

1.8/2.8/3.3

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