GP2021 datasheet(20/62 Pages) MITEL

Part #	GP2021

Description	GPS 12 channel Correlator Advance Information

PDF	62 Pages

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Manufacturer	MITEL [Mitel Networks Corporation]

Direct Link	http://www.mitel.com

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GP2021

Fig.19 Correlator write and read cycles

20MHz

INTERNAL

CLOCK

MCLK

ARM_ALE

DBE

NRW

INTERNAL

WRITE

INTERNAL

READ

A<22:20>, A<9:0>

D<15:0>

VALID

NOTE: NBW is High and NMREQ Low

VALID

Debug (Abort) Function

This is a feature designed to aid debugging and functions

as follows:–

In ARM System Mode, the MULTI_FN_IO pin can be

configured as a TRIGGER input to the Debug block via the

IO_CONFIG register (see Detailed Description of Registers).

In this mode a rising edge at the MULTI_FN_IO pin will

generate a valid ARM data Abort sequence at the ABORT pin

as shown in Fig. 20.

Standard Interface Mode

This mode allows the GP2021 to be interfaced to most

standard 16 and 32 bit microprocessors as shown in Fig. 21.

No memory control is provided, so external glue logic may be

required in order to interface the microprocessor to memory.

ABORT

MCLK

MULTI_FN_IO

NOPC

NMREQ

Fig.20 Debug (Abort) Function

GP2021 Datasheet(PDF) 20 Page - Mitel Networks Corporation