TPIC2010 Datasheet, PDF (29/70 Pages) Texas Instruments – Serial I/F Controlled 9-Channel Motor-Driver

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TPIC2010
SLIS170 – DECEMBER 2015
Programming (continued)
8.5.1.3 Read Operation
DSP sends 8-bit header through SIMO, in order to perform Read operation. TPIC2010 will start to drive the
SOMI line upon the eighth falling edge of SCLK and shift out eight data bits. The master DSP inputs 8bits data
from SOMI after the ninth rising edge of SCLK. 　 There’s optional read mode that SOMI data is advanced a half
clock cycle of SCLK. This mode becomes effective by setting “ADVANCE_RD” (REG74) = H.
SSZ
SCLK
SIMO
A6 A5 A4 A3 A2 A1 A0 R
SOMI
Hi-Z
D7 D6 D5 D4 D3 D2 D1 D0
Figure 24. Read 8 Bits Control Register
8.5.1.4 Write and Read Operation
Optionally, the master DSP can read Status register during writing 12 bits DAC (Focus DAC) packet. It’s enabled
by setting bit “RDSTAT_ON_VFCS” (REG74) = H.
SSZ
SCLK
SIMO
SOMI
Hi -Z
C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 25. Write 12 Bits Focus DAC Data + Read 8 Bits Status Data
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