Datasheet

VS1053b Datasheet
10 OPERATION
10.12.5 Memory Test
Memory test mode is initialized with the 8-byte sequence 0x4D 0xEA 0x6D 0x54 0 0 0 0. After
this sequence, wait for 1100000 clock cycles. The result can be read from the SCI register
SCI_HDAT0, and ’one’ bits are interpreted as follows:
Bit(s) Mask Meaning
15 0x8000 Test finished
14:10 Unused
9 0x0200 Mux test succeeded
8 0x0100 Good MAC RAM
7 0x0080 Good I RAM
6 0x0040 Good Y RAM
5 0x0020 Good X RAM
4 0x0010 Good I ROM 1
3 0x0008 Good I ROM 2
2 0x0004 Good Y ROM
1 0x0002 Good X ROM 1
0 0x0001 Good X ROM 2
0x83ff All ok
Memory tests overwrite the current contents of the RAM memories.
Version: 1.22, 2014-12-19 68