CS5535 datasheet(392/555 Pages) NSC

Part #	CS5535

Description	Geode??CS5535 I/O Companion Multi-Function South Bridge

PDF	555 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

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392

Revision 0.8

UART/IR Controller Register Descriptions (Continued)

5.12.9.2

SIR Pulse Width Register (SIR_PW)

SIR_PW sets the pulse width for transmitted pulses in SIR operation mode. These settings do not affect the receiver. Upon

reset, the content of this register is 00h, which defaults to a pulse width of 3/16 of the baud rate.

5.12.9.3

Bank Select Register (BSR)

BSR is the same as the BSR register at I/O Offset 03h in Bank 0. See Section 5.12.3.4 "Link Control/Bank Select Regis-

ters" on page 373 for bit descriptions.

I/O Offset

02h

Type

R/W

Reset Value

00h

SIR_PW Register Map

RSVD

SPW[3:0]

SIR_PW Bit Descriptions

Bit

Name

Description

7:4

RSVD

Reserved. Write to 0.

3:0

SPW[3:0]

SIR Pulse Width. Two codes for setting the pulse width are available. All other values for

this field are reserved.

0000: Pulse width = 3/16 of bit period (Default).

1101: Pulse width = 1.6 µs.

I/O Offset

03h

Type

R/W

Reset Value

00h

CS5535 Datasheet(PDF) 392 Page - National Semiconductor (TI)