ST2100 datasheet(18/39 Pages) STMICROELECTRONICS

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Pin descriptions

ST2100

18/39

DocID025777 Rev 1

Table 6. Debug pin descriptions

Signal name

Ball

Direction

Function

Pin type

Reserved

Connect to GND

TTL input buffer, 3.3 V

tolerant with PD

JTAG_TMS

Test mode select

TTL input buffer, 3.3 V

tolerant with PU

JTAG_TCK

Test clock

TTL input buffer, 3.3 V

tolerant with PU

JTAG_NTRST

Test reset input

TTL input buffer, 3.3 V

tolerant with PU

JTAG_TDI

Test data input

TTL input buffer, 3.3 V

tolerant with PU

JTAG_TDO

Out

Test data output

TTL output buffer, 3.3 V

capable, 4 mA

ETM_TRACECLK

Out

ETM clock (the other ETM

signals are available on MFIOs)

TTL output buffer, 3.3 V

capable, 4 mA

Table 7. Boot source descriptions

Signal name

Ball

Direction

Function

Pin type

SOC_CFG_BOOT0

Boot mode configuration

TTL input buffer, 3.3 V

tolerant with PD

SOC_CFG_BOOT1

Boot mode configuration

TTL input buffer, 3.3 V

tolerant with PD

SOC_CFG_BOOT2

Boot mode configuration

TTL input buffer, 3.3 V

tolerant with PD

SOC_CFG_BOOT3

Boot mode configuration

TTL input buffer, 3.3 V

tolerant with PD

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