Allwinner A20 - Page 441

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 441 / 812
Offset: 0x008
Register name: Int_Status
Bits
Read
/Write
Default
/Hex
Description
5
R/Clea
r
0
AUD_FIFO_OVER_FLOW
Audio input fifo over flow flag
0: normal
1: over flow happen
4
R/Clea
r
0
AUD_TRANS_BUSY
Audio output transmit flag
0: audio data are transmitted as request
1: audio data are not transmitted as request
3:2
/
/
reserved
1
R/Clea
r
0
VID_FIFO_OVER_FLOW
Video input fifo over flow flag
0: normal
1: over flow happen
0
R/Clea
r
0
VID_FIFO_UNDER_FLOW
Video input fifo under flow flag
0: normal
1: under flow happen
5.2.4.4. HDMI HOT PLUG REGISTER
Offset: 0x00c
Register name: HPD
Bits
Read
/Write
Default
/Hex
Description
31:16
/
/
reserved
15
R
/
RX_ACTIVE_SENSE(PIN TX2+)
1: RX pull high
0: RX pull low
14
R
/
RX_ACTIVE_SENSE(PIN TX2-)
1: RX pull high
0: RX pull low
13
R
/
RX_ACTIVE_SENSE(PIN TX1+)
1: RX pull high