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6.10.5.16 MCSPI

For more details about features and additional description information on the device Serial Port Interface, see

the corresponding sections within Signal Descriptions and Detailed Description.

For more information, see Multichannel Serial Peripheral Interface (MCSPI) section in Peripherals chapter in the

device TRM.

Table 6-50 represents MCSPI timing conditions.

Note

The IO timings provided in this section are applicable for all combinations of signals for MCU_SPI0

and MCU_SPI1. However, the timings are only valid for MCU_SPI0 and MCU_SPI1 if signals within a

single IOSET are used. The IOSETs are defined in the Table 6-55 and Table 6-56 tables.

Table 6-50. MCSPI Timing Conditions

PARAMETER

MIN

MAX

UNIT

INPUT CONDITIONS

SRI

Input slew rate

8.5

V/ns

OUTPUT CONDITIONS

Output load capacitance

CLK

D[x], CSi

6.10.5.16.1 MCSPI — Controller Mode

Table 6-51, Figure 6-73, Table 6-52, and Figure 6-74 present timing requirements and switching characteristics

for MCSPI – Controller Mode.

Table 6-51. MCSPI Timing Requirements - Controller Mode

see Figure 6-73

NO.

MIN

MAX

UNIT

SM4

tsu(misoV-

spiclkV)

Setup time, SPI_D[x] valid before SPI_CLK active edge

2.9

SM5

th(spiclkV-

misoV)

Hold time, SPI_D[x] valid after SPI_CLK active edge

Table 6-52. MCSPI Switching Characteristics - Controller Mode

see Figure 6-74

NO.

PARAMETER

MODE

MIN

MAX

UNIT

SM1

tc(spiclk)

Cycle time, SPI_CLK

20.8

SM2

tw(spiclkL)

Pulse duration, SPI_CLK low

0.5P -

1(1)

SM3

tw(spiclkH)

Pulse duration, SPI_CLK high

0.5P -

1(1)

SM6

td(spiclkV-simoV)

Delay time, SPI_CLK active edge to SPI_D[x]

transition

–2

SM7

td(csV-simoV)

Delay time, SPI_CSi active edge to SPI_D[x] transition

SM8

td(csV-spiclk)

Delay time, SPI_CSi active to SPI_CLK first edge

PHA = 0(2)

B - 4(3)

PHA = 1 (2)

A - 4(4)

SM9

td(spiclkV-csV)

Delay time, SPI_CLK last edge to SPI_CSi inactive

PHA = 0(2)

A - 4(4)

PHA = 1(2)

B - 4(3)

(1)

P = SPI_CLK period in ns

(2)

SPI_CLK phase is programmable with the PHA bit of the MCSPI_CHCONF_0/1/2/3 register

(3)

B = (TCS + .5) * TSPICLKREF, where TCSns a bit field of the MCSPI_CHCONF_0/1/2/3 register and Fratio = Even >= 2.

(4)

When P = 20.8 ns, A = (TCS + 1) * TSPICLKREF, where TCSns a bit field of the MCSPI_CHCONF_0/1/2/3 register.

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AM69A, AM69

SPRSP92C – FEBRUARY 2023 – REVISED JUNE 2024

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