SPEAR1340 datasheet(105/200 Pages) STMICROELECTRONICS

tên linh kiện	SPEAR1340

Giải thích chi tiết về linh kiện	Dual-core Cortex A9 HMI embedded MPU

PDF	200 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

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105 / 200 page

SPEAr1340

Pin description

Doc ID 023063 Rev 4

105/200

3.5.3

Clocks and resets

3.5.4

Debug interface

Note:

The ARM Trace ports are enabled via the miscellaneous registers.

For ARM JTAG mode, the TEST[4:0] pins should be set to “00001” at power-up. For

functional mode, the same pins should be set to “00000”.

When the 2V5 power supply is not present on the OTP supply ball, the JTAG debug features

are not available on the device.

Table 13.

Main clock and reset pins descriptions

Signal name

Description

Type

Ball

MCLK_XI

Master clock (MCLK) 24 MHz (typical) crystal in

OSC

MCLK_XO

Master clock (MCLK) 24 MHz (typical) crystal out

RTC_XI

Real-time clock (RTC) 32 kHz crystal in

OSC

RTC_XO

Real-time clock (RTC) 32 kHz crystal out

MRESETn

Main reset

IOTYP

AF15

Table 14.

Debug pins description

Signal name

Description

Type

Ball

ARM_TRSTn

Test reset input

AE15

ARM_TCK

Test trace clock

AD16

ARM_TDI

Test trace data input

AD15

ARM_TMS

Test trace mode select

AE16

ARM_TDO

Test trace data output

AF16

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