MAX5158 Maxim, MAX5158 Datasheet - Page 10

• Manufacturer Part Number: MAX5158
• Description: Low-Power / Dual / 10-Bit / Voltage-Output DACs with Serial Interface
• Manufacturer: Maxim

Low-Power, Dual, 10-Bit Voltage-Output DACs
with Serial Interface
Figure 2. Connections for Microwire
Table 1. Serial-Interface Programming Command
x = Don’t care
Note: When A0, C1, and C0 = 0, then D9, D8, D7, and D6 become control bits. S2–S0 are sub bits, always zero.
10
A0
0
1
0
1
0
1
1
0
0
0
0
0
0
0
0
0
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MAX5158
MAX5159
C1
0
0
1
1
1
0
1
0
0
0
0
0
0
0
0
0
C0
1
1
0
0
1
0
1
0
0
0
0
0
0
0
0
0
16-BIT SERIAL WORD
SCLK
DIN
CS
D9..........................D0
(MSB)
0 0 1 x xxxxxx
1 0 1 x xxxxxx
1 1 0 x xxxxxx
1 1 1 x xxxxxx
0 1 0 x xxxxxx
0 1 1 x xxxxxx
1 0 0 1 xxxxxx
1 0 0 0 xxxxxx
0 0 0 x xxxxxx
10-bit DAC data
10-bit DAC data
10-bit DAC data
10-bit DAC data
10-bit DAC data
xxxxxxxxxx
xxxxxxxxxx
SK
SO
I/O
(LSB)
MICROWIRE
PORT
S2–S0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
Load input register A; DAC registers are unchanged.
Load input register B; DAC registers are unchanged.
Load input register A; all DAC registers are updated.
Load input register B; all DAC registers are updated.
Load all DAC registers from the shift register
(start up both DACs with new data.).
Update both DAC registers from their respective input registers
(start up both DACs with data previously stored in the input registers).
Shut down both DACs (provided PDL = 1).
Update DAC register A from input register A
(start up DAC A with data previously stored in input register A).
Update DAC register B from input register B
(start up DAC B with data previously stored in input register B).
Shut down DAC A (provided PDL = 1).
Shut down DAC B (provided PDL = 1).
UPO goes low (default).
UPO goes high.
Mode 1, DOUT clocked out on SCLK’s rising edge.
Mode 0, DOUT clocked out on SCLK’s falling edge (default).
No operation (NOP).
remains active. Data in the input registers is saved,
allowing the MAX5158/MAX5159 to recall the output
state prior to entering shutdown when returning to nor-
mal mode. Exit shutdown by recalling the previous con-
dition or by updating the DAC with new information.
When returning to normal operation (exiting shutdown),
wait 20µs for output stabilization.
The MAX5158/MAX5159 3-wire serial interface is com-
patible with both Microwire (Figure 2) and SPI/QSPI
(Figure 3) serial-interface standards. The 16-bit serial
input word consists of an address bit, two control bits, 10
bits of data (MSB to LSB), and 3 sub-bits as shown in
Figure 4. The address and control bits determine the
MAX5158/MAX5159’s response, as outlined in Table 1.
FUNCTION
Serial Interface