I/o hub module, C h a p t e r 9 : i / o h u b m o d u l e 6 3 – Digi NS9215 User Manual
Page 363
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363
I/O Hub Module
C
H
A
P
T
E
R
9
T
he I/O hub provides access to the low speed ports on the processor through one
master port on the AHB bus. The low speed ports include four UART ports, one SPI
port, one I
2
C port, 2 multi-function controlled ports, and one analog-to-digital
(A/D) port. UART channel C can be configured for HDLC operation.
The SPI, UART, and A/D ports can be controlled either directly by the CPU or
through the DMA controller, which is integrated into the I/O hub, The I
2
C does not
have DMA support.
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