pca9632 NXP Semiconductors, pca9632 Datasheet - Page 5

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

NXP Semiconductors
7. Functional description
PCA9632_1
Objective data sheet
7.1.1 Regular I
7.1.2 LED All Call I
7.1.3 LED Sub Call I
7.1 Device addresses
Refer to
Following a START condition, the bus master must output the address of the slave it is
accessing.
The I
The last bit of the address byte defines the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
See
Remark: The default LED All Call I
as a regular I
PCA9632s on the I
See
Fig 4. Slave address
•
•
•
•
•
•
•
Default power-up value (ALLCALLADR register): E0h or 1110 000
Programmable through I
At power-up, LED All Call I
E0h (R/W = 0) or E1h (R/W = 1) is sent by the master.
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 7.3.8 “LED All Call I
Section 7.3.7 “I
2
C-bus slave address of the PCA9632 is shown in
Figure 1 “Block diagram of
2
C-bus slave address
2
C-bus slave address since this address is enabled at power-up. All the
2
2
C-bus addresses can be used
C-bus address
2
C-bus addresses
2
2
C-bus will acknowledge the address if sent by the I
Rev. 01 — 28 September 2007
C-bus subaddress 1 to 3, SUBADRx”
2
C-bus addresses are disabled. PCA9632 does not send an
2
2
C-bus (volatile programming)
C-bus (volatile programming)
2
1
C-bus address is enabled. PCA9632 sends an ACK when
2
C-bus address, ALLCALLADR”
1
2
PCA9632”.
C-bus address (E0h or 1110 000) must not be used
slave address
0
fixed
0
0
4-bit Fm+ I
1
002aab318
0
Figure
R/W
2
for more detail.
C-bus low power LED driver
4.
for more detail.
PCA9632
2
© NXP B.V. 2007. All rights reserved.
C-bus master.
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