SPC58EEX datasheet(108/154 Pages) STMICROELECTRONICS

108 / 154 page

Electrical characteristics

SPC58EEx, SPC58NEx

108/154

DS11646 Rev 4

Figure 32. DSPI PCS strobe (PCSS) timing (master mode)

3.18.2.1.3 DSPI LVDS master mode – modified timing

PCSx

PCSS

tPCSC

tPASC

Table 57. DSPI LVDS master timing — full duplex — modified transfer format

(MTFE = 1), CPHA = 0 or 1

Symbol C Characteristic

Condition

Value(1)

Unit

Pad drive

Load

Min

Max

1tSCK CC D SCK cycle time

LVDS

15 pF

to 25 pF

differential(2)

30.0

—

2tCSC CC D

PCS to SCK

delay

(LVDS SCK)

PCS drive strength

Very strong

25 pF

(N(3) ×tSYS(4))–

—ns

Strong

50 pF

(N(3) ×tSYS(4))–

—ns

Medium

50 pF

(N(3) ×tSYS(4))–

—ns

3tASC CC D

After SCK delay

(LVDS SCK)

Very strong

PCS = 0 pF

SCK = 25 pF

(M(5) ×tSYS(4))–

—ns

Strong

PCS = 0 pF

SCK = 25 pF

(M(5) ×tSYS(4))–

—ns

Medium

PCS = 0 pF

SCK = 25 pF

(M(5) ×tSYS(4))–

—ns

4tSDC CC D

SCK duty

cycle(6)

LVDS

15 pF

to 25 pF

differential

1/2tSCK –2

1/2tSCK +2

7tSUI CC D

SIN setup time

to SCK

CPHA = 0(7)

SCK drive strength

LVDS

15 pF

to 25 pF

differential

23 –

(P(8) ×tSYS(4))

—ns

SIN setup time

to SCK

CPHA = 1(7)

SCK drive strength

LVDS

15 pF

to 25 pF

differential

—

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