PNX1302EH NXP Semiconductors, PNX1302EH Datasheet - Page 161

• Manufacturer Part Number: PNX1302EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1302EH

• Lead Free Status / RoHS Status: Not Compliant

Philips Semiconductors
The timestamp can be read in the DMA interrupt handler
as MMIO register SPDO_TSTAMP. Its contents corre-
sponds to the (synchronized) clock edge at which the last
Figure 10-4. SPDO unit status/control field MMIO layout.
10.14 MMIO REGISTER DESCRIPTION
Table 10-4. SPDO_STATUS MMIO register
BUF1_EMPTY
BUF2_EMPTY
HBE
UNDERRUN
MMIO_base
0x10 4C0C
0x10 4C00
0x10 4C04
0x10 4C08
0x10 4C10
0x10 4C14
0x10 4C18
field
offset:
type
SPDO_STATUS (r/
SPDO_CTL (r/w)
r/o
r/o
r/o
r/o
SPDO_FREQ (r/w)
SPDO_BASE1 (r/w)
SPDO_BASE2 (r/w)
SPDO_SIZE (r/w)
SPDO_TSTAMP (r/o)
Sticky flag - set if DMA buffer 1 emp-
tied by the SPDO hardware. Can only
be cleared by software write to
ACK_BUF1.
Sticky flag - set if DMA buffer 2 emp-
tied by the SPDO hardware. Can only
be cleared by software write to
ACK_BUF2.
Highway Bandwidth Error. Sticky flag -
set if internal SPDO buffers emptied
before new data brought from mem-
ory. Refer to
Highway Latency.”
only by a software write to ACK_HBE.
Sticky flag - set if both DMA buffers
were emptied before a new full buffer
was assigned by the DSPCPU. The
hardware has performed a normal
buffer switch over and is emitting old
data. Can only be cleared by software
write to ACK_UDR.
TRANS_ENABLE
RESET
TRANS_MODE
Section 10.17, “HBE and
LITTLE_ENDIAN
description
31
31
31
Can be cleared
SLEEPLESS
27
27
27
23
23
23
bit in the DMA buffer was sent across the output signal
pin.
Table 10-4. SPDO_STATUS MMIO register
Table 10-5. SPDO_CTL MMIO register
PRELIMINARY SPECIFICATION
BUF1_ACTIVE
ACK_BUF1
ACK_BUF2
ACH_HBE
ACK_UDR
BUF1_INTEN
BASE1
BASE2
field
19
19
19
field
SIZE (in bytes)
FREQUENCY
TIMESTAMP
15
15
15
type
r/o
type
w/o
w/o
w/o
w/o
r/w
UDR_INTEN
HBE (Highway bandwidth error)
Flag - set if the hardware is currently
emitting DMA buffer 1 data; negated
when emitting DMA buffer 2 data.
HBE_INTEN
Always reads as ‘0’. Write a ‘1’ here
to clear BUF1_EMPTY. This
informs SPDO that DMA buffer 1 is
now full. Writing a ‘0’ has no effect.
Always reads as ‘0’. Write a ‘1’ here
to clear BUF2_EMPTY. This
informs SPDO that DMA buffer 2 is
now full. Writing a ‘0’ has no effect.
Always reads as ‘0’. Writing a ‘1’
here clears HBE.
Always reads as ‘0’. Writing a ‘1’
here clears UNDERRUN.
If BUF1_EMPTY asserted and this
bit asserted, the SRC 25 interrupt
line is asserted.
11
11
BUF2_INTEN
11
BUF1_ACTIVE
BUF1_INTEN
UNDERRUN
ACK_UDR
description
description
ACK_HBE
7
7
7
ACK_BUF2
BUF2_EMPTY
BUF1_EMPTY
ACK_BUF1
0
0
0
0
0
0
SPDIF Out
3
3
0
0
0
3
0
0
0
0
0
0
10-5
0
0
0
0
0
0