TMS570LS3137 datasheet(47/173 Pages) TI1

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TMS570LS3137

www.ti.com

SPNS162C – APRIL 2012 – REVISED APRIL 2015

5.10 Output Buffer Drive Strengths

Table 5-4. Output Buffer Drive Strengths

LOW-LEVEL OUTPUT CURRENT,

IOL for VI=VOLmax

SIGNALS

HIGH-LEVEL OUTPUT CURRENT,

IOH for VI=VOHmin

FRAYTX2, FRAYTX1, FRAYTXEN1, FRAYTXEN2,

MIBSPI5CLK,

MIBSPI5SOMI[0],

MIBSPI5SOMI[1],

MIBSPI5SOMI[2],

MIBSPI5SOMI[3],

MIBSPI5SIMO[0], MIBSPI5SIMO[1], MIBSPI5SIMO[2], MIBSPI5SIMO[3],

8 mA

TMS, TDI, TDO, RTCK,

SPI4CLK, SPI4SIMO, SPI4SOMI, nERROR,

N2HET2[1], N2HET2[3],

All EMIF Outputs and I/Os, All ETM Outputs

MIBSPI3SOMI, MIBSPI3SIMO, MIBSPI3CLK, MIBSPI1SIMO, MIBSPI1SOMI, MIBSPI1CLK,

4 mA

nRST

AD1EVT,

CAN1RX, CAN1TX, CAN2RX, CAN2TX, CAN3RX, CAN3TX,

DMM_CLK, DMM_DATA[0], DMM_DATA[1], DMM_nENA, DMM_SYNC,

GIOA[0-7], GIOB[0-7],

LINRX, LINTX,

2 mA zero-dominant

MIBSPI1NCS[0],

MIBSPI1NCS[1-3],

MIBSPI1NENA,

MIBSPI3NCS[0-3],

MIBSPI3NENA,

MIBSPI5NCS[0-3], MIBSPI5NENA,

N2HET1[0-31],

N2HET2[0],

N2HET2[2],

N2HET2[4],

N2HET2[5],

N2HET2[6],

N2HET2[7],

N2HET2[8],

N2HET2[9],

N2HET2[10],

N2HET2[11],

N2HET2[12],

N2HET2[13],

N2HET2[14],

N2HET2[15], N2HET2[16], N2HET2[18],

SPI2NCS[0], SPI2NENA, SPI4NCS[0], SPI4NENA

ECLK,

selectable 8 mA/2 mA

SPI2CLK, SPI2SIMO, SPI2SOMI

The default output buffer drive strength is 8mA for these signals.

Table 5-5. Selectable 8 mA/2 mA Control

SIGNAL

CONTROL BIT

ADDRESS

8 mA

2 mA

ECLK

SYSPC10[0]

0xFFFF FF78

SPI2CLK

SPI2PC9[9](1)

0xFFF7 F668

SPI2SIMO

SPI2PC9[10](1)

0xFFF7 F668

SPI2SOMI

SPI2PC9[11](1)

0xFFF7 F668

(1)

Either SPI2PC9[11] or SPI2PC9[24] can change the output strength of the SPI2SOMI pin. In case of a 32-bit write where these two bits

differ, SPI2PC9[11] determines the drive strength.

Specifications

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