Samsung S5PC110 Manual page 1660

S5PC110_UM
10.3.3.25 Audio Related Packet Register (ACR_CON, R/W, Address = 0xFA11_0180)
ACR_CON
-
Alt_Cts_Rate
ACR_Tx_Mode
Bit
[7:5] Reserved
[4:3] In some audio formats, the CTS value can be changed
alternately.
CTS value 1 = ACR_CTS[19:0]
CTS value 2 = {ARC_CTS[19:8], ACR_LSB2}
These two values can be transmitted alternately at the ratio of
this register setting.
00 = Always CTS value 1
01 = 1:1 (CTS value 1: CTS value2)
10 = 2:1 (CTS value 1: CTS value2)
11 = 3:1 (CTS value 1: CTS value2)
Measured CTS mode, this value is not used.
[2:0] 000 = Does not transfer (Tx) the ACR packet.
001 = Tx once – Transmits ACR packet once; anytime
available after this value is set. After transmitting, these bits
are reset to all zero.
010 = Tx ACR_TXCNT times during every VBI period
011 = Tx by counting i_clk_vid for a given CTS value in the
ACR_CTS0~2 registers.
100 = Measured CTS mode. Makes ACR packet with CTS
value by counting TMDS clock for Fs x 128 / N duration. In
this case, the 7 LSBs of N value (ACR_N register) should be
all zero.
10 9BHIGH-DEFINITION MULTIMEDIA INTERFACE
Description Initial State
3b000
2b00
3b000
10-51