pca9632 NXP Semiconductors, pca9632 Datasheet - Page 6

• Manufacturer Part Number: pca9632
• Description: Pca9632 4-bit Fm I?c-bus Low Power Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9632_1
Objective data sheet
7.1.4 Software Reset I
7.2 Control register
Remark: The default LED Sub Call I
slave addresses as long as they are disabled.
The address shown in
performed by the master. The Software Reset address (SWRST Call) must be used with
R/W = 0. If R/W = 1, the PCA9632 does not acknowledge the SWRST. See
“Software Reset”
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 PCA9632, which will be
stored in the Control register.
The lowest 4 bits are used as a pointer to determine which register will be accessed
(D[3:0]). The highest 3 bits are used as Auto-Increment flag and Auto-Increment options
(AI[2:0]). Bit 4 is unused and must be programmed with zero (0) for proper device
operation.
When the Auto-Increment flag is set (AI2 = 1), the four 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.
Fig 5. Software Reset address
Fig 6. Control register
reset state = 80h
Remark: The Control register does not apply to the Software Reset I
2
C-bus slave address or as an LED All Call or LED Sub Call address.
for more detail.
2
C-bus address
Rev. 01 — 28 September 2007
Figure 5
AI2 AI1 AI0
Auto-Increment flag
0
2
is used when a reset of the PCA9632 needs to be
C-bus address is a reserved address and cannot be used
Auto-Increment options
0
2
C-bus addresses may be used as regular I
0
0
0
D3
0
register address
4-bit Fm+ I
D2
1
002aab416
D1
002aab296
1
R/W
D0
0
2
C-bus low power LED driver
2
C-bus address.
PCA9632
© NXP B.V. 2007. All rights reserved.
Section 7.5
2
C-bus
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