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10 uart a / registers - 17, 16 baud rate register set (dll/dlm) - 17, 17 enhanced register set - 17 – Kontron VMP2 User Manual

Page 69: Vmp2 configuration

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VMP2

Configuration

ID 24855, Rev. 02

Page 4 - 17

© 2002 PEP Modular Computers GmbH

4.3.4.10 UART A / Registers

For a detailed description please refer to the EXAR XR16C 2850 DUART manual.

The UART A occupies the following addresses:

Table 4-15: General Register Set (THR/RHR, IER/ISR, MCR/MSR, LCR/LSR, SPR)

Read Mode

Write Mode

Address

Receive Holding Register

Transmit Holding Register
Interrupt Enable Register

FFe0 0000
FFe0 0001

Interrupt Status Register

FIFO Control Register
Line Control Register (LCR)
Modem Control Register

FFe0 0002
FFe0 0003
FFe0 0004

Line Status Register

--

FFe0 0005

Modem Status Register

--

FFe0 0006

Scratchpad Register

Scratchpad Register

FFe0 0007

Table 4-16: Baud Rate Register Set (DLL/DLM)

Read Mode

Write Mode

Address

LSB of divisor latch

LSB of divisor latch

FFe0 0000

MSB of divisor latch

MSB of divisor latch

FFe0 0001

Table 4-17: Enhanced Register Set

Read Mode

Write Mode

Address

Trigger Level Register

Trigger Level Register

FFe0 0000

Feature Control Register

Feature Control Register

FFe0 0001

Enhanced Feature Register

Enhanced Feature Register

FFe0 0002

Enhanced Mode Select Register

Enhanced Mode Select
Register

FFe0 0007

Xon-1

Xon-1

FFe0 0004

Xon-2

Xon-2

FFe0 0005

Xoff-1

Xoff-1

FFe0 0006

Xoff-2

Xoff-2

FFe0 0007