MAX6957 Datasheet, PDF (11/23 Pages) Maxim Integrated Products – 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander

4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port LED Display Driver and I/O Expander
Table 3. Register Address Map
REGISTER
No-Op
Global Current
Configuration
Transition Detect Mask
Display Test
Port Configuration P7, P6, P5, P4
Port Configuration P11, P10, P9, P8
Port Configuration P15, P14, P13, P12
Port Configuration P19, P18, P17, P16
Port Configuration P23, P22, P21, P20
Port Configuration P27, P26, P25, P24
Port Configuration P31, P30, P29, P28
Current054
Current076
Current098
Current0BA
Current0DC
Current0FE
Current110
Current132
Current154
Current176
Current198
Current1BA
Current1DC
Current1FE
Port 0 only (virtual port, no action)
Port 1 only (virtual port, no action)
Port 2 only (virtual port, no action)
Port 3 only (virtual port, no action)
Port 4 only
Port 5 only
Port 6 only
Port 7 only
Port 8 only
Port 9 only
Port 10 only
COMMAND ADDRESS
HEX
D15 D14 D13 D12 D11 D10 D9 D8 ^CODE
R/ W
0
0
0
0
0
0
0 0x00
R/ W
0
0
0
0
0
1
0 0x02
R/ W
0
0
0
0
1
0
0 0x04
R/ W
0
0
0
0
1
1
0 0x06
R/ W
0
0
0
0
1
1
1 0x07
R/ W
0
0
0
1
0
0
1 0x09
R/ W
0
0
0
1
0
1
0 0x0A
R/ W
0
0
0
1
0
1
1 0x0B
R/ W
0
0
0
1
1
0
0 0x0C
R/ W
0
0
0
1
1
0
1 0x0D
R/ W
0
0
0
1
1
1
0 0x0E
R/ W
0
0
0
1
1
1
1 0x0F
R/ W
0
0
1
0
0
1
0 0x12
R/ W
0
0
1
0
0
1
1 0x13
R/ W
0
0
1
0
1
0
0 0x14
R/ W
0
0
1
0
1
0
1 0x15
R/ W
0
0
1
0
1
1
0 0x16
R/ W
0
0
1
0
1
1
1 0x17
R/ W
0
0
1
1
0
0
0 0x18
R/ W
0
0
1
1
0
0
1 0x19
R/ W
0
0
1
1
0
1
0 0x1A
R/ W
0
0
1
1
0
1
1 0x1B
R/ W
0
0
1
1
1
0
0 0x1C
R/ W
0
0
1
1
1
0
1 0x1D
R/ W
0
0
1
1
1
1
0 0x1E
R/ W
0
0
1
1
1
1
1 0x1F
R/ W
0
1
0
0
0
0
0 0x20
R/ W
0
1
0
0
0
0
1 0x21
R/ W
0
1
0
0
0
1
0 0x22
R/ W
0
1
0
0
0
1
1 0x23
R/ W
0
1
0
0
1
0
0 0x24
R/ W
0
1
0
0
1
0
1 0x25
R/ W
0
1
0
0
1
1
0 0x26
R/ W
0
1
0
0
1
1
1 0x27
R/ W
0
1
0
1
0
0
0 0x28
R/ W
0
1
0
1
0
0
1 0x29
R/ W
0
1
0
1
0
1
0 0x2A
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