CS5535 datasheet(363/555 Pages) NSC

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UART/IR Controller Register Descriptions (Continued)

5.12.1 UART/IR Controller Specific MSRs

5.12.1.1

UART[x] Primary Dongle and Modem Interface (UART[x]_MOD)

UART1 Primary Dongle and Modem Interface (UART[1]_MOD)

UART2 Primary Dongle and Modem Interface (UART[2]_MOD)

MSR_UART[x]_MOD is used for primary identification of the dongle interface and also provides the device with a virtual

modem interface. To run legacy software, the modem control bits are set such that the software sees the modem always

ready for data transfer.

MSR Address

51400038h

Type

R/W

Reset Value

0xh

MSR Address

5140003Ch

Type

R/W

Reset Value

0xh

UART[x]_MOD Register Map

MOD7

MOD6

MOD5

MOD4

ID0

ID1

ID2

ID3

UART[x]_MOD Bit Descriptions

Bit

Name

Description

7MOD7

Modem 7. This bit directly sets the value of the Ring Indicator (RI) bit of the Modem Status

6MOD6

Modem 6. This bit directly sets the value of the Data Set Ready (DSR) bit of the Modem Status

5MOD5

Modem 5. This bit directly sets the value of the Data Carrier Detect (DCD) bit of the Modem

Status Register (Bank 0, I/O Offset 06h[7]).

4MOD4

Modem 4. This bit directly sets the value of the Clear to Send (CTS) bit of the Modem Status

3:0

ID0-ID3

Primary Dongle Control Signals. This field selects the type of IR Dongle allowing software to

imitate the functionality of a real dongle. These bits are unused in UART mode.

x000: Infrared transceiver with serial interface and differential signalling.

x100: Reserved.

0010: IrDA-data transceiver is: Sharp RY5HD01 or Sharp RY5KD01.

1010: Reserved.

0110: Infrared transceiver with serial interface and single-ended signalling.

1110: Infrared transceiver supports consumer IR modes only.

0001: IrDA-data transceiver is: HP HSDL-2300 or HP HSDL-3600

1001: IrDA-data transceiver is: IBM 31T1100, Vishay-Telefunken TFDS6000 or Siemens

IRMS/T6400.

0101: Reserved.

1101: IrDA-data transceiver is: Vishay-Telefunken TFDS6500.

x011: IrDA-data transceiver is: HP HSDL-1100, HP HSDL-2100, TI TSML 1100 or Sharp

RY6FD11E.

0111: IrDA-data transceiver supports SIR mode only.

1111: No dongle connected.

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