Datasheet

10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
REGISTER DATA
REGISTER
R/W
ADDRESS
CODE
(HEX)
D7 D6
D5 D4 D3 D2 D1 D0
CONFIGURATION
DOUT
/OSC
X
PWM
stagger
Hold-
off
status
Fade-
off
status
Ramp-
up
enable/
status
CS run
Sh u t d o w n /
r u n
Write device configuration
0
Ramp-
up
enable
Read-back device configuration
1
OSC X Stagger
Hold-
off
Fade-
off
Ramp-
up
status
CS run
Run
Shutdown mode (CS run disabled)
Put or keep device in shutdown,
disable CS run
0
X
X
XXXX0 0
Shutdown mode (CS run enabled)
Put or keep device in shutdown,
enable CS run
0
0x10
X
X
XXXX1 0
Run mode
(device is currently in run mode)
0
X
X
X0
*
0
*
XX 1
R u n ( e x it sh u t d o w n ) wit h o u t ra m p - u p
(device is currently in shutdown);
bring device out of shutdown
instantly, ignoring fade register setting
0
X
X
X0
*
0
*
0X 1
Run (exit shutdown) with ramp-up
(device is currently in shutdown);
bring device out of shutdown using
fade register ramp-up setting
0
X
X
X0
*
0
*
1X 1
0
*
1
*
1
*
0
*
Run (abort shutdown sequence)
(device is currently in hold-off/fade-off
sequence to shutdown);
bring device out of shutdown
instantly, ignoring fade register setting
0
X
X
X
1
*
1
*
1X 1
Status: shutdown mode
1
X
X Stagger
00 0
CS run
0
Status: in fade-off sequence to
shutdown mode
1
X
X Stagger
01 0
CS run
0
Status: in hold-off sequence to
shutdown mode
1
X
X Stagger
10 0
CS run
0
Status: run mode
1
X
X Stagger
00 0
CS run
1
Status: in ramp-up sequence to run
mode
1
X
X Stagger
00 1
CS run
1
PWM outputs are in phase
X
X
X
0XXXX X
PWM outputs stagger phase
X
X
X
1XXXX X
DOUT/OSC is DOUT output,
PWM clock source is internal oscillator
X
0
X
XXXXX X
DOUT/OSC is OSC input,
PWM clock source is OSC
X
1
X
XXXXX X
Table 4. Configuration Register
*Current read status of this bit.
MAX6966/MAX6967
Maxim Integrated
13