AM1808 datasheet(165/262 Pages) TI

165 / 262 page

AM1808

www.ti.com

SPRS653C

– FEBRUARY 2010 – REVISED DECEMBER 2011

Table 5-83. Additional(1) SPI1 Slave Timings, 5-Pin Option(2)(3)

1.3V, 1.2V

1.1V

1.0V

NO.

PARAMETER

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

Required delay from SPI1_SCS asserted at slave to

td(SCSL_SPC)S

P+1.5

first SPI1_CLK edge at slave.

Polarity = 0, Phase = 0,

0.5M+P+4

0.5M+P+5

0.5M+P+6

from SPI1_CLK falling

Polarity = 0, Phase = 1,

P+4

P+5

P+6

Required delay from final

from SPI1_CLK falling

td(SPC_SCSH)S

SPI1_CLK edge before

Polarity = 1, Phase = 0,

SPI1_SCS is deasserted.

0.5M+P+4

0.5M+P+5

0.5M+P+6

from SPI1_CLK rising

Polarity = 1, Phase = 1,

P+4

P+5

P+6

from SPI1_CLK rising

tena(SCSL_SOMI)

Delay from master asserting SPI1_SCS to slave

P+15

P+17

P+19

driving SPI1_SOMI valid

Delay from master deasserting SPI1_SCS to slave

tdis(SCSH_SOMI)S

P+15

P+17

P+19

3-stating SPI1_SOMI

Delay from master deasserting SPI1_SCS to slave

tena(SCSL_ENA)S

driving SPI1_ENA valid

Polarity = 0, Phase = 0,

2.5P+15

2.5P+17

2.5P+19

from SPI1_CLK falling

Polarity = 0, Phase = 1,

Delay from final clock

2.5P+15

2.5P+17

2.5P+19

from SPI1_CLK rising

receive edge on SPI1_CLK

tdis(SPC_ENA)S

to slave 3-stating or driving

Polarity = 1, Phase = 0,

2.5P+15

2.5P+17

2.5P+19

high SPI1_ENA.(4)

from SPI1_CLK rising

Polarity = 1, Phase = 1,

2.5P+15

2.5P+17

2.5P+19

from SPI1_CLK falling

(1)

These parameters are in addition to the general timings for SPI slave modes (Table 5-77).

(2)

P = SYSCLK2 period; M = tc(SPC)M (SPI master bit clock period)

(3)

Figure shows only Polarity = 0, Phase = 0 as an example. Table gives parameters for all four slave clocking modes.

(4)

SPI1_ENA is driven low after the transmission completes if the SPIINT0.ENABLE_HIGHZ bit is programmed to 0. Otherwise it is

tri-stated. If tri-stated, an external pullup resistor should be used to provide a valid level to the master. This option is useful when tying

several SPI slave devices to a single master.

Peripheral Information and Electrical Specifications

165

Submit Documentation Feedback

Product Folder Link(s): AM1808

AM1808 Datasheet(PDF) 165 Page - Texas Instruments

AM1808 Datasheet(HTML) 165 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL