Loading Sequence - Texas Instruments OMAP5912 Reference Manual

MicroWire Interface
3.4.1

Loading Sequence

110 Serial Interfaces
1) Set the following fields of the control and status register (CSR):
NB_BITS_RD: 0
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NB_BITS_WR: 0
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INDEX: 01
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CS_CMD: 1
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START: 0
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2) Wait for the CSRB bit of the control and status register (CSR) to be reset.
3) Load the transmit data register (TDR) with:
D7d1...D0d1 D7d2...D0d2 D7d1...D0d1: Data for digit 1
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D7d2...D0d2: Data for digit 2
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4) Set the following fields of the control and status register (CSR):
NB_BITS_RD: 0
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NB_BITS_WR: 16 (decimal)
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INDEX: 01
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CS_CMD: 1
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START: 1
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5) Wait for the CSRB bit of the control and status register (CSR) to be reset.
6) Load the transmit data register (TDR) with:
D7d3...D0d3 D7d4...D0d4 D7d3...D0d3: Data for digit 3
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D7d4...D0d4: Data for digit 4
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7) Set the following fields of the control and status register (CSR):
NB_BITS_RD: 0
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NB_BITS_WR: 16 (decimal)
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INDEX: 01
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CS_CMD: 1
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START: 1
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8) Wait for the CSRB bit of the control and status register (CSR) to be reset.
9) Load the transmit data register (TDR) with:
D7...D0 x x x x x x x x x: Don't care
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D7...D0: Data for special segment and control function
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SPRU760B