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SX8663 bảng dữ liệu(PDF) 57 Page - Semtech Corporation

tên linh kiện SX8663
Giải thích chi tiết về linh kiện  Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output
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nhà sản xuất  SEMTECH [Semtech Corporation]
Trang chủ  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
Rev5 4
th August 2011
© 2011 Semtech Corp.
www.semtech.com
57
SX8663
Capacitive Button Matrix (up to 36) and Proximity Controller
with Individual LED Drivers and Buzzer Output
6.6
SPM Gateway Registers
The SX8663 I2C interface offers two registers for exchanging the SPM data with the host.
• SpmCfg
• SpmBaseAddr
Address
Name
Bits
Description
7:6
00: Reserved
5:4
Defines the normal operation or SPM mode
00: I2C in normal operation mode (default)
01: I2C in SPM mode
10: Reserved
11: Reserved
3
Defines r/w direction of SPM
0: SPM write access (default)
1: SPM read access
0x0D
SpmCfg
2:0
000: Reserved
Table 23
SPM access configuration
Address
Name
Bits
Description
0x0E
SpmBaseAddr
7:0
SPM Base Address (modulo 8).
The lowest address is 0x00 (default)
The highest address is 0x78.
Table 24
SPM Base Address
The exchange of data, read and write, between the host and the SPM is always done in bursts of eight bytes.
The base address of each burst of eight bytes is a modulo 8 number, starting at 0x00 and ending at 0x78.
The registers SpmKeyMsb and SpmKeyLsb are required for NVM programming as described in section 6.7.
Address
Name
Bits
Description
0xAC
SpmKeyMsb
7:0
SPM to NVM burn Key MSB
Unlock requires writing data: 0x62
Table 25
SPM Key MSB at I2C register address 0xAC
Address
Name
Bits
Description
0xAD
SpmKeyLsb
7:0
SPM to NVM burn Key LSB
Unlock requires writing data: 0x9D
Table 26
SPM Key LSB



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