CS5463 datasheet(22/44 Pages) CIRRUS

22 / 44 page

CS5463

DS678PP1

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.

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

0xFFF

0x000

0x3FF

Hardware Registers*

32 Pages

Software Register*

32 Pages

ROM

2048 Words

0x400

0x7FF

0x800

Pages

0x40 - 0x7F

Pages

0x20 - 0x3F

Pages

0 - 0x1F

* Accessed using register read/write commands.

Figure 11. CS5463 Memory Map

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