CP3BT23_14 Datasheet, PDF (195/324 Pages) Texas Instruments – CP3BT23 Reprogrammable Connectivity Processor with Bluetooth and Dual CAN Interfaces

CP3BT23
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SNOSCX3A – JULY 2013 – REVISED JANUARY 2014
20.9.3 PCM Data Input Register (PCMIN)
The PCMIN register is a 16-bit wide write-only register. It is used to write PCM data to the PCM to CVSD
converter via the peripheral bus. It is double-buffered, providing a 125 µs period for an interrupt or DMA
request to respond.
15
0
PCMIN
20.9.4 PCM Data Output Register (PCMOUT)
The PCMOUT register is a 16-bit wide read-only register. It is used to read PCM data from the CVSD to
PCM converter. It is double-buffered, providing a 125 µs period for an interrupt or DMA request to
respond. After reset the PCMOUT register is clear.
15
0
PCMOUT
20.9.5 Logarithmic PCM Data Input Register (LOGIN)
The LOGIN register is an 8-bit wide write-only register. It is used to receive 8-bit logarithmic PCM data
from the peripheral bus and convert it into 13-bit linear PCM data.
7
0
LOGIN
20.9.6 Logarithmic PCM Data Output Register (LOGOUT)
The LOGOUT register is an 8-bit wide read-only register. It holds logarithmic PCM data that has been
converted from linear PCM data. After reset, the LOGOUT register is clear.
7
0
LOGOUT
20.9.7 Linear PCM Data Input Register (LINEARIN)
The LINEARIN register is a 16-bit wide write-only register. The data is left-aligned. When converting to A-
law, bits 2:0 are ignored. When converting to µ-law, bits 1:0 are ignored.
15
0
LINEARIN
20.9.8 Linear PCM Data Output Register (LINEAROUT)
The LINEAROUT register is a 16-bit wide read-only register. The data is left-aligned. When converting
from A-law, bits 2:0 are clear. When converting from µ-law, bits 1:0 are clear. After reset, this register is
clear.
15
0
LINEAROUT
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CVSD/PCM Conversion Module 195