Rainbow Electronics MAX6963 - Manual (Page 17)

Initial Power-Up
On power-up, all control registers are reset (Table 12),
and the MAX6960 defaults to driver address 0 within a
panel of 256 drivers, monocolor, 1-bit-per-pixel, in one
row. The 3-wire interface automatically performs a con-
figuration on all interconnected MAX6960s after power-
up, reassigning the driver address allocation according
to the 3-wire interface interconnections. After perform-
ing the driver address allocation, the MAX6960 enters
shutdown mode.
Device Configuration
The MAX6960s driving a display panel must be config-
ured before the panel can be used to display images.
The configuration involves the global panel configura-
tion register (Table 15–Table 22), the global driver
devices register (Table 13), and the global driver rows
register (Table 14).
MAX6960–MAX6963
4-Wire Serially Interfaced
8 x 8 Matrix Graphic LED Drivers
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REGISTER DATA
REGISTER
ADDRESS
CODE (HEX) D7 D6 D5 D4 D3 D2 D1 D0
Global driver devices 0x0E MS 8-bit global driver devices 0x00 to 0xFF LSB
Table 13. Global Driver Devices Format
REGISTER DATA
REGISTER
ADDRESS
CODE (HEX) D7 D6 D5 D4 D3 D2 D1 D0
Global driver rows 0x0F MSB 8-bit global driver rows 0x00 to 0xFF LSB
Table 14. Global Driver Rows Format
REGISTER DATA
REGISTER FUNCTION POWER-UP CONDITION
ADDRESS
CODE (HEX) D7 D6 D5 D4 D3 D2 D1 D0
Driver address (read only) Address 0 0x00 0 0 0 0 0 0 0 0
Pixel intensity scale Arithmetic for red and green 0x01 X X X X X X 0 0
Panel intensity 128/256 intensity 0x02 1 0 0 0 0 0 0 0
Digit 0 intensity Full 255/256 0x03 1 1 1 1 1 1 1 1
Digit 1 intensity Full 255/256 0x04 1 1 1 1 1 1 1 1
Fault No faults 0x05 0 X X X X X 0 0
Global driver indirect address Address 0x00 0x08 0 0 0 0 0 0 0 0
Global display indirect address
LSB
0x09 0 0 0 0 0 0 0 0
Global display indirect address
MSB
Address 0x0000
0x0A X X 0 0 0 0 0 0
Global plane counter Manual selection to plane 0 0x0B 0 0 0 0 0 0 0 0
Global panel configuration
Shutdown mode,
ripple sync enabled,
mux flip enabled,
color is mono,
4 display planes/1 bit per
pixel
0x0D 0 0 1 1 X X X 0
Global driver devices 256 drivers interconnected 0x0E 1 1 1 1 1 1 1 1
Global driver rows 256 drivers in a row 0x0F 1 1 1 1 1 1 1 1
Table 12. Power-Up Configuration
*When reading from the global registers, only the master MAX6960 (whose driver address is 0x00) responds.