ST20-GP1 datasheet(69/116 Pages) STMICROELECTRONICS

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ST20-GP1 Datasheet(PDF) 69 Page - STMicroelectronics

Part #	ST20-GP1

Description	GPS PROCESSOR

PDF	116 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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69 / 116 page

ST20-GP1

69/116

Figure 11.1 Peek, poke and bootstrap

Note,

peeks and pokes in the address range #20000000 to #3FFFFFFF access the internal

peripheral device registers. Therefore they can be used to conﬁgure the EMI before booting. Note

that addresses that overlap the internal peripheral addresses (#20000000 to 3FFFFFFF) can not

be accessed via the link.

Following a

peek or poke, the ST20-GP1 returns to its previously held state. Any number of

accesses may be made in this way until the control byte is greater than 1, when the ST20-GP1 will

commence reading its bootstrap program.

address

data

address

data

bootstrap

Poke

Peek

Bootstrap

Control byte

where n is 2 to 255

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