Owner manual

Configuration VMP3

29230.01.UG.VC.050727/091437

P R E L I M I N A R Y

4.3.3 UART C (SER3)

The following table indicate the address mapping of the UART C (SER3). For a more detailed

description please refer to the EXAR XR16C2850 or XR16C2750 DUART manual.

Accessible only when CS A/B is logical 0.

Accessible only when CS A/B is logical 0 and LCR bit 7 is a logical 1.

Accessible only when LCR is set to “BF” hex.

Table 4-25: UART C General Register Set

READ MODE WRITE MODE ADDRESS

Receive Holding Register Transmit Holding Register 0xFFFF 8010

n/a Interrupt Enable Register 0xFFFF 8011

Interrupt Status Register FIFO Control Register 0xFFFF 8012

n/a Line Control Register 0xFFFF 8013

n/a Modem Control Register 0xFFFF 8014

Line Status Register n/a 0xFFFF 8015

Modem Status Register n/a 0xFFFF 8016

Scratchpad Register Scratchpad Register 0xFFFF 8017

Table 4-26: UART C Baud Rate Register Set

READ MODE WRITE MODE ADDRESS

LSB of divisor latch LSB of divisor latch 0xFFFF 8010

MSB of divisor latch MSB of divisor latch 0xFFFF 8011

Table 4-27: UART C Enhanced Register Set

READ MODE WRITE MODE ADDRESS

Trigger Level Register Trigger Level Register 0xFFFF 8010

Feature Control Register Feature Control Register 0xFFFF 8011

Enhanced Feature Register Enhanced Function Register 0xFFFF 8012

Enhanced Mode Select Register Enhanced Mode Select Register 0xFFFF 8017

Xon-1 Xon-1 0xFFFF 8014

Xon-2 Xon-2 0xFFFF 8015

Xoff-1 Xoff-1 0xFFFF 8016

Xoff-2 Xoff-2 0xFFFF 8017