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MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
Table 4. Configuration Register
REGISTER
R/W
ADDRESS
CODE
REGISTER DATA
CONFIGURATION
(HEX)
D7
DOUT
/OSC
D6
X
D5
PWM
stagger
D4
Hold-
off
status
D3
Fade-
off
status
D2
Ramp-
up
enable/
status
D1
CS run
D0
Shutdown/
run
Ramp-
Write device configuration
0
up
Read-back device configuration
1
0x10
OSC
X
Stagger
Hold-
off
Fade-
off
enable
Ramp-
up
CS run
Run
status
Shutdown mode (CS run disabled)
Put or keep device in shutdown,
0
X
X
X
X
X
X
0
0
disable CS run
Shutdown mode (CS run enabled)
Put or keep device in shutdown,
0
X
X
X
X
X
X
1
0
enable CS run
Run mode
(device is currently in run mode)
0
X
X
X
0 *
0 *
X
X
1
Run (exit shutdown) without ramp-up
(device is currently in shutdown);
bring device out of shutdown
0
X
X
X
0 *
0 *
0
X
1
instantly, ignoring fade register setting
Run (exit shutdown) with ramp-up
(device is currently in shutdown);
bring device out of shutdown using
0
X
X
X
0 *
0 *
1
X
1
fade register ramp-up setting
Run (abort shutdown sequence)
(device is currently in hold-off/fade-off
0 *
1 *
1 *
0 *
sequence to shutdown);
0
X
X
X
1
X
1
bring device out of shutdown
instantly, ignoring fade register setting
1 *
1 *
Status: shutdown mode
Status: in fade-off sequence to
shutdown mode
Status: in hold-off sequence to
shutdown mode
Status: run mode
Status: in ramp-up sequence to run
mode
PWM outputs are in phase
PWM outputs stagger phase
DOUT/OSC is DOUT output,
PWM clock source is internal oscillator
DOUT/OSC is OSC input,
PWM clock source is OSC
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
Stagger
Stagger
Stagger
Stagger
Stagger
0
1
X
X
0
0
1
0
0
X
X
X
X
0
1
0
0
0
X
X
X
X
0
0
0
0
1
X
X
X
X
CS run
CS run
CS run
CS run
CS run
X
X
X
X
0
0
0
1
1
X
X
X
X
* Current read status of this bit.
Maxim Integrated
13
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