Data Buffer Registers - Analog Devices ADSP-21261 SHARC Hardware Reference Manual

Data Buffer Registers

The data buffer registers in
registers for each port. These registers include:
• Serial Port Receive Buffer (
serial ports have two position FIFOs for receiving data when con-
nected to another serial device.
• Serial Port Transmit Buffer (
serial ports have two position FIFOs for transmitting data when
connected to another serial device.
• SPI Receive Buffer (
a single position buffer for receiving data when connected to
another serial device.
• SPI Transmit Buffer (
has a single position buffer for transmitting data when connected
to another serial device.
• Parallel Port Transmit Buffer (
parallel port has two-position FIFOs for transmitting data when
connected to another device.
• Parallel Port Receive Buffer (
allel port has two position FIFOs for receiving data when
connected to another parallel device.
• Input Data Port Buffers (
input data port has eight position buffers for receiving data when
connected to another device.
ADSP-2126x SHARC Processor Hardware Reference
Figure 7-3 on page 7-22
). These receive buffers for the
RXSPx
). These transmit buffers for the
TXSPx
). This receive buffer for the SPI port has
RXSPI
). This transmit buffer for the SPI port
TXSPI
). This transmit buffer for the
TXPP
). This receive buffer for the par-
RXPP
). This receive buffer for the
IDP_FIFO
I/O Processor
shows the data buffer
7-23