CXD2931GA-9 Просмотр технического описания (PDF) - Sony Semiconductor

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CXD2931GA-9

1 chip GPS LSI

Sony Semiconductor 

CXD2931R-9/GA-9

Battery Backup Mode

The battery backup mode is activated when the power for the GPS receiver is turned off and power-on reset

goes to low level. The timer clock continues to operate even when power-on reset goes low, but all other clock

are fixed high and the LSI is set to the low power consumption mode. At this time, the RAM data is held and

the registers are initialized.

Battery backup mode is canceled by setting power-on reset to high.

Power-on reset

EXRS

PWRST

Timer clocks

CCKI, CCKO

Other clocks

TCXO, XTCXO, CLKI, CLKO

Normal outputs

TXD0 to 2, OTCXO, HOLDA

Tri-state outputs

IODBK, RUN, CLKOUT

Tri-state outputs

ICS0, ICS1, IADR[18:1],

IRD, IWR, DRD, DWR, XCS0

Bidirectional

(Input)

SINT, IB[15:0], DCS0 to DCS5,

DADR[15:0], DB[7:0], PORT[22:0] (Outut)

Inputs

RXD0 to RXD2, IF0,

HOLD, NMI, PMI

10 clocks

100ms or more

Fixed low

Fixed low

Hi-Z

Fixed low

Hi-Z

Fixed low

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