CS5463 Datasheet, PDF (22/44 Pages) Cirrus Logic – Single Phase, Bi-directional Power/Energy IC

CS5463
If the serial port interface becomes unsynchronized with
respect to the SCLK input, any attempt to clock valid
commands into the serial interface may result in unex-
pected operation. The serial port interface must then be
re-initialized by one of the following actions:
- Drive the CS pin high, then low.
- Hardware Reset (drive RESET pin low, for at
least 10 µs).
- Issue the Serial Port Initialization Sequence,
which is 3 (or more) SYNC1 command bytes
(0xFF) followed by one SYNC0 command byte
(0xFE).
If a re-synchronization is necessary, it is best to re-ini-
tialize the part either by hardware or software reset
(0x80), as the state of the part may be unknown.
5.14 Register Paging
Read/write commands access one of the 32 registers
within a specified page. By default, Page = 0. To access
registers in another page, the Page Register (address
0x1F) must be written with the desired page number.
0xFFF
ROM
2048 Words
Pages
0x40 - 0x7F
0x800
0x7FF
0x400
0x3FF
Hardware Registers*
32 Pages
Software Register*
32 Pages
Pages
0x20 - 0x3F
Pages
0 - 0x1F
0x000
* Accessed using register read/write commands.
Figure 11. CS5463 Memory Map
Example:
Reading register 6 in page 3.
1. Write 3 to page register with command and data:
0x7E 0x00 0x00 0x03
2. Read register 6 with command:
0x0C 0xFF 0xFF 0xFF
22
DS678PP1