cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 392

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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UART/IR Controller Register Descriptions
5.12.9.2
I/O Offset
Type
Reset Value
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
I/O Offset
Type
Reset Value
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.
Bit
7:4
3:0
7
SIR Pulse Width Register (SIR_PW)
Bank Select Register (BSR)
Name
RSVD
SPW[3:0]
02h
R/W
00h
03h
R/W
00h
6
RSVD
Description
Reserved. Write to 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.
5
SIR_PW Bit Descriptions
SIR_PW Register Map
4
392
(Continued)
3
2
SPW[3:0]
1
Revision 0.8
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