pca9625 NXP Semiconductors, pca9625 Datasheet - Page 8

• Manufacturer Part Number: pca9625
• Description: Pca9625 16-bit Fm I2c-bus 100 Ma 24 V Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9625_2
Product data sheet
7.2 Control register
Remark: The Software Reset I
as a regular I
Following the successful acknowledgement of the slave address, LED All Call address or
LED Sub Call address, the bus master will send a byte to the PCA9625, which will be
stored in the Control register.
The lowest 5 bits are used as a pointer to determine which register will be accessed
(D[4:0]). The highest 3 bits are used as Auto-Increment flag and Auto-Increment options
(AI[2:0]).
When the Auto-Increment flag is set (AI2 = logic 1), the five low order bits of the Control
register are automatically incremented after a read or write. This allows the user to
program the registers sequentially. Four different types of Auto-Increment are possible,
depending on AI1 and AI0 values.
Table 3.
Remark: Other combinations not shown in
reserved and must not be used for proper device operation.
AI2
0
1
1
1
1
Fig 4.
Fig 5.
AI1
0
0
0
1
1
Software Reset address
reset state = 80h
Remark: The Control register does not apply to the Software Reset I
Control register
Auto-Increment options
2
C-bus slave address or as an LED All Call or LED Sub Call address.
AI0
0
0
1
0
1
Rev. 02 — 15 January 2008
Function
no Auto-Increment
Auto-Increment for all registers. D[4:0] roll over to ‘0 0000’ after the last
register (1 1011) is accessed.
Auto-Increment for individual brightness registers only. D[4:0] roll over to
‘0 0010’ after the last register (1 0001) is accessed.
Auto-Increment for global control registers only. D[4:0] roll over to
‘1 0010’ after the last register (1 0011) is accessed.
Auto-Increment for individual and global control registers only. D[4:0] roll
over to ‘0 0010’ after the last register (1 0011) is accessed.
AI2 AI1 AI0 D4
Auto-Increment flag
0
2
C-bus address is a reserved address and cannot be used
Auto-Increment options
0
0
0
Table 3
16-bit Fm+ I
register address
D3
0
D2
1
(AI[2:0] = 001, 010, and 011) are
002aab416
D1
002aac147
1
2
R/W
C-bus 100 mA 24 V LED driver
D0
0
2
C-bus address.
PCA9625
© NXP B.V. 2008. All rights reserved.
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