pca9634 NXP Semiconductors, pca9634 Datasheet - Page 8

• Manufacturer Part Number: pca9634
• Description: Pca9634 8-bit Fm I2c-bus Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9634_4
Product data sheet
7.1.3 LED Sub Call I
7.1.4 Software Reset I
7.2 Control register
See
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 PCA9634 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 PCA9634, 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]).
Fig 6. Software Reset address
•
•
•
•
3 different I
Default power-up values:
– SUBADR1 register: E2h or 1110 001
– SUBADR2 register: E4h or 1110 010
– SUBADR3 register: E8h or 1110 100
Programmable through I
At power-up, Sub Call I
ACK when E2h (R/W = 0) or E3h (R/W = 1), E4h (R/W = 0) or E5h (R/W = 1), or
E8h (R/W = 0) or E9h (R/W = 1) is sent by the master.
Section 7.3.7 “SUBADR1 to SUBADR3: I
2
C-bus slave address or as an LED All Call or LED Sub Call address.
2
C-bus addresses can be used
2
for more detail.
C-bus addresses
2
C-bus address
Rev. 04 — 5 January 2007
Figure 6
2
C-bus addresses are disabled. PCA9634 does not send an
2
C-bus (volatile programming)
0
2
is used when a reset of the PCA9634 needs to be
C-bus address is a reserved address and cannot be used
0
2
C-bus addresses may be used as regular I
0
0
2
0
C-bus subaddress 1 to 3”
1
002aab416
1
R/W
0
8-bit Fm+ I
PCA9634
2
© NXP B.V. 2007. All rights reserved.
C-bus LED driver
for more detail.
Section 7.6
2
C-bus
8 of 37