CXD2932AGA-2 Просмотр технического описания (PDF) - Sony Semiconductor

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производитель

CXD2932AGA-2

GPS Base Band LSI

Sony Semiconductor 

CXD2932AGA-2

(6) Port setting

When the power turns on or initialization setting is performed by the reset input, the system starts operation

according to the selected port setting. Perform initialization after the setting is changed because the setting

can not be changed during operation.

I/O

Port

For reset For operation

Description

0

I

I

Test pin (Low = Normal mode)

1

I

2

I

I

Communication format selection

PORT[2:1] = (00: Sony Binary, 01: NMEA4800,

I

10: NMEA9600, 11: Unused)

3

I

I

RTC selection (High = Internal / Low = External)

4

I

I

Test pin (High = Normal mode)

5

I

I

Test pin (Low = Normal mode)

6

I

O

Unused

7

I

O

Unused

8

I

O

Unused

9

I

I

Antenna sense (Low = Disable / High = Enable)

10

I

O

Antenna shutdown (High = Cut)

11

I

I

Test pin (Low = Normal mode)

12

I

O

Unused

13

I

I/O

RTC SIO (Leave open when the internal RTC is selected.)

14

I

O

RTC SCL (Leave open when the internal RTC is selected.)

15

I

O

RTC CE (Leave open when the internal RTC is selected.)

(7) A/D setting

The antenna sense function can be realized by connecting the antenna power supply of the GPS receiver to

the A/D channel pins shown below. See the Application Circuit for the resistance value and others. See the

Port setting for the antenna sense function disable/enable selection.

I/O

VIN

For reset For operation

Description

0

I

I

Antenna power supply (before current value detection resistor)

1

I

I

Antenna power supply (after current value detection resistor)

2

I

I

Test pin (Low level fixed)

3

I

I

Test pin (Low level fixed)

– 17 –

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