Figure 6. Serial Port Chip Select Operation.

Transfer Protocol Formats

Read:

3 Bytes

dead

cycle

Bit #

012

34567

clock #

123

45678

Bit

R/W-

S0

S1

S2

R0

R1

R2

R3

1 cycle

min (1)

Reply:

Bit

D0

(null)

D1

D2

D3

D4

D5

D6

D7

Bit

D8

(null)

D9

D10

D11

D12

D13

D14

D15

(1) normally, this dead cycle time is met by the serial port turnaround delay time.

Format for write to the Dolphin DAC, 12V Combo Compatible mode:

Write:

10 Bits

to DAC

dead

cycle

Bit

R/W-

S0

S1

S2

A0 (1)

A1

D8

D9

1 cycle

min

D0

D1

D2

D3

D4

D5

D6

D7

1 cycle

min

L6256

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