Line 2 Channel Data Register (Line2) - Hitachi HD64465 User Manual

14.2.15 Line 2 Channel Data Register (LINE2)

LINE2, a 32-bit Read/Write register, is a channel via which the system can write Line 2 DAC data
to CODEC or read Line2 ADC data from CODEC. Bits 31-20 are reserved. The other bits are
initialized to 0 at reset. LINE2 is not initialized in STANDBY mode.
Bit 31
Bit Name -
Initial Value -
R/W -
Bit 23
Bit Name -
Initial Value -
R/W -
Bit 15
Bit Name D15
Initial Value 0
R/W R/W
Bit 7
Bit Name D7
Initial Value 0
R/W R/W
Bit Description
31 - 20 Reserved
19 - 0 Data 19-0 (D19-0): When this register is written, these bits will be written to the first empty
entry of LINE 2 TX FIFO and then be transmitted to the connected CODEC.
When this register is read, the first non-empty entry of LINE2 RX FIFO will be read. LINE2
RX FIFO stores Line 2 ADC data from the connected CODEC.
30 29 28
- - -
- - -
- - -
22 21 20
- - -
- - -
- - -
14 13 12
D14 D13 D12
0 0 0
R/W R/W R/W
6 5 4
D6 D5 D4
0 0 0
R/W R/W R/W
27 26 25
- - -
- - -
- - -
19 18 17
D19 D18 D17
0 0 0
R/W R/W R/W
11 10 9
D11 D10 D9
0 0 0
R/W R/W R/W
3 2 1
D3 D2 D1
0 0 0
R/W R/W R/W
Rev. 3.0, 03/01, page 199 of 390
24
-
-
-
16
D16
0
R/W
8
D8
0
R/W
0
D0
0
R/W
Default
-
0