ADSP-21368 SHARC Processor Hardware Reference 4-25
Digital Audio/Digital Peripheral Interfaces
Group B Connections—Data Signals
Group B connections are used to route signals to serial data inputs. This
includes serial data inputs to both the A and B channels of the SPORTs
and to each of the eight IDP channels. The SRCs and SPDIF transmitter
are also selected from the list of group B sources and set in the group B
registers. When a SPORT is configured to transmit, the data source set
here is ignored. Likewise, when channel 0 of the IDP is used for the
PDAP, the serial data source set here is ignored. The registers are shown in
Figure 4-18 through Figure 4-24. The input and output signals for group
B are summarized in Table 4-5 on page 4-29.
L
The following notes apply to group B connections.
1. SRU_DAT0, SRU_DAT1, SRU_DAT2, SRU_DAT3, SRU_DAT4, and
SRU_DAT5 are 30-bit registers. On reads, bits 30 and 31
always return zero.
2. SRU_DAT6 is a 24-bit register. On reads, bits 31 through 24
always return zero.
Figure 4-18. SRU_DAT0 Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0000010000001010
Reserved
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0010000000100000
Serial Port 2 Data Channel A Input
SPORT2_DA_I
Serial Port 1 Data
Channel A Input
SPORT1_DA_I
Serial Port 1 Data Channel B Input
SPORT1_DB_I
Serial Port 0 Data Channel B Input
SPORT0_DB_I
Serial Port 0 Data
Channel A Input
SPORT0_DA_I
SRU_DAT0 (0x2440)
SPORT1_DA_I
Reset = 0x08144040
Serial Port 1 Data Channel A Input
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