Lines Matching +full:over +full:- +full:sampling
1 .. SPDX-License-Identifier: GPL-2.0
9 -------------------------------------------
13 .. code-block:: none
16 Digit 8: 31-28
19 Digit 7: 27-24 (0xc = 12 = b1100 )
24 Digits 6,5: 23-16
25 25-16: COMB_RANGE = 0x1f [default] (9 bits -> max 512)
27 Digit 4: 15-12
33 Digit 3: 11-8
39 Digit 2: 7-4
40 7-6: YCORE
41 5-4: CCORE
43 Digit 1: 3-0
48 0x47 is the sync byte for MPEG-2 transport stream packets.
53 -----------------------------------
62 0 1 Line-In
71 - Register 24'h20004 PCI Interrupt Status
73 - bit [18] IR_SMP_INT Set when 32 input samples have been collected over
74 - gpio[16] pin into GP_SAMPLE register.
78 - Setup 4KHz sampling rate (roughly 2x oversampled; good enough for our RC5
80 - set register 0x35C050 to 0xa80a80
81 - enable sampling
82 - set register 0x35C054 to 0x5
83 - enable the IRQ bit 18 in the interrupt mask register (and
91 bits. (Hint: look for the 0/1and 1/0 crossings of the RC5 bi-phase data) An
92 actual raw RC5 code will span 2-3 DWORDS, depending on the actual alignment.
97 over time, so don't assume any sample starts at any particular place.
109 This document has a how to decode a bi-phase data stream: