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PCA9633DP2 数据表(PDF) 15 Page - NXP Semiconductors

部件名 PCA9633DP2
功能描述  4-bit Fm I2C-bus LED driver
PDF  43 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCA9633DP2 数据表(HTML) 15 Page - NXP Semiconductors

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PCA9633_5
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 25 July 2008
15 of 43
NXP Semiconductors
PCA9633
4-bit Fm+ I2C-bus LED driver
7.3.7 I2C-bus subaddress 1 to 3, SUBADRx
Subaddresses are programmable through the I2C-bus. Default power-up values are E2h,
E4h, E8h, and the device(s) will not acknowledge these addresses right after power-up
(the corresponding SUBx bit in MODE1 register is equal to 0).
Once subaddresses have been programmed to their right values, SUBx bits need to be
set to 1 in order to have the device acknowledging these addresses (MODE1 register).
Only the 7 MSBs representing the I2C-bus subaddress are valid. The LSB in SUBADRx
register is a read-only bit (0).
When SUBx is set to 1, the corresponding I2C-bus subaddress can be used during either
an I2C-bus read or write sequence.
7.3.8 LED All Call I2C-bus address, ALLCALLADR
The LED All Call I2C-bus address allows all the PCA9633s in the bus to be programmed
at the same time (ALLCALL bit in register MODE1 must be equal to 1, power-up default
state). This address is programmable through the I2C-bus and can be used during either
an I2C-bus read or write sequence. The register address can be programmed as a
sub call.
Only the 7 MSBs representing the All Call I2C-bus address are valid. The LSB in
ALLCALLADR register is a Read-only bit (0).
If ALLCALL bit = 0, the device does not acknowledge the address programmed in register
ALLCALLADR.
Table 14.
SUBADR1 to SUBADR3 - I2C-bus subaddress registers 0 to 3 (address 09h to
0Bh) bit description
Legend: * default value.
Address
Register
Bit
Symbol
Access
Value
Description
09h
SUBADR1
7:1
A1[7:1]
R/W
1110 001*
I2C-bus subaddress 1
0
A1[0]
R only
0*
reserved
0Ah
SUBADR2
7:1
A2[7:1]
R/W
1110 010*
I2C-bus subaddress 2
0
A2[0]
R only
0*
reserved
0Bh
SUBADR3
7:1
A3[7:1]
R/W
1110 100*
I2C-bus subaddress 3
0
A3[0]
R only
0*
reserved
Table 15.
ALLCALLADR - LED All Call I2C-bus address register (address 0Ch) bit
description
Legend: * default value.
Address
Register
Bit
Symbol
Access
Value
Description
0Ch
ALLCALLADR
7:1
AC[7:1]
R/W
1110 000*
ALLCALL I2C-bus
address register
0
AC[0]
R only
0*
reserved



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