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MAX6960–MAX6963

4-Wire Serially Interfaced

8 x 8 Matrix Graphic LED Drivers

16 ______________________________________________________________________________________

basis (updates all MAX6960s), according to the status

of the local/global bit (Table 9). The local/global bit is

ignored during a 16-bit read transmission, and the

MAX6960 pointed to by the global driver indirect

address register is read.

When a read or write is indirected through the global dri-

ver indirect address register, the 16-bit command can

choose whether the global driver indirect address is

autoincremented after the command has been executed.

This allows the host to set up one or more registers in

consecutive MAX6960s with the display indirect address,

autoincrementing only when required (Table 10).

Driver Address Register

Reading the driver address register (Table 11) returns

the driver address that has been assigned to a particu-

lar MAX6960. The order of the driver addresses is

determined purely by the order that the 3-wire interface

is daisy-chained through multiple MAX6960s. The reg-

ister is used to detect the presence of a MAX6960 at an

address, and a binary search on the 256 possible

addresses can be used to determine the size of an

array of MAX6960s.

COMMAND ADDRESS

ADDRESS

CODE

(HEX)

D15 D14 D13 D12 D11 D10 D9 D8

LOCAL: Only the MAX6960 indirected by driver

indirect address is written.

0X0XXXXX

GLOBAL: All MAX6960s are written with the same

data.

0X1XXXXX

LOCAL: The MAX6960 indirected by driver indirect

address responds.

1X0XXXXX

GLOBAL: The MAX6960 configured to address 0x00

responds.

0x00 to

0x07

1X1XXXXX

GLOBAL: All MAX6960s are written with the same

data.

0XXXXXXX

GLOBAL: The MAX6960 configured to address 0x00

responds.

0x08 to

0x0F

1XXXXXXX

Table 9. Register Address Local/Global Control Bit Format

COMMAND ADDRESS

ADDRESS

CODE

(HEX)

D15 D14 D13 D12 D11 D10 D9 D8

Driver indirect address is not changed X 0 XXXXXX

Driver indirect address is incremented after read/write

0x00 to

0x07

X1XXXXXX

Driver indirect address is not changed

0x08 to

XXXXXXXX

Table 10. Register Address Autoincrement Control Bit Format

ADDRESS

CODE

(HEX)

D7 D6 D5 D4 D3 D2 D1

Driver address 0x00

MSB

8-bit driver address 0x00 to 0xFF

LSB

Table 11. Driver Address Register Format

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 33 34

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