STA5620 datasheet(19/29 Pages) STMICROELECTRONICS

Part #	STA5620

Description	Fully integrated RF front-end for GPS

PDF	29 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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19 / 29 page

STA5620

Registers

19/29

7.6

Debug register (sub-circuit enables)

Table 11.

Debug register (sub-circuit enables)

address

Name

Bit

Default value

MODE = 0

Default value

MODE = 1

Description

0x51

VCO

XXXX XXX y [0]

VCO = 0

The VCO block is OFF

VCO = 1

The VCO block is ON

PLL

XXXX XX y X [1]

PLL = 0

The PLL block is OFF

PLL = 1

The PLL block is ON

RFA

XXXX X y XX [2]

RFA = 0

The RF Amplifier is OFF

RFA = 1

The RF Amplifier is ON

MIX

XXXX y XXX [3]

MIX = 0

The Mixer is OFF

MIX = 1

The Mixer is ON

XXX y XXXX [4]

IF = 0

The IF chain from Polyphase filter to

ADC is OFF

IF = 1

The IF chain from Polyphase filter to

ADC is ON

AGC

XX y X XXXX [5]

AGC = 0

The Automatic Gain Control is OFF

AGC = 1

The Automatic Gain Control is ON

ENM

y XXX XXXX [7]

ENM = 0

The whole chip is OFF except the

Xtal Osc and the GPS_CLK and/or

XTAL_CLK buffers

ENM = 1

RF chain is On

(If RFE bit or RF_EN pin = 1)

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