Product specifications

VT1211 LPC SuperIO and Hardware Monitor
Revision 1.0 January 8, 2002 -52- Register Descriptions – VFIR I/O
Technologies, Inc.
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Offset 12 – Infrared SIR BOF (C0h)...............................RW
7-0 BOF Flag.............................................default = C0h
Value used as Begin-of-Flag for SIR format.
Offset 13 – Infrared SIR EOF (C1h)...............................RW
7-0 EOF Flag.............................................default = C1h
Value used as of End-of-Flag for SIR format.
Offset 14 – Infrared Status High 0 ..................................RO
7-1 Reserved............................................ always reads 0
0VFIROn.. ............................................... default = 0
‘1’ indicates a valid VFIR configuration
Offset 15 – Infrared Status and Control 0 (00h) ............RW
7 IR Enable .........................................................RW
0 Disable ...................................................default
1 Enables both circuits of physical layer
interface and clock generation
6 Configuration Error ............................................ RO
When set to ‘1’, indicates an error occurs by more
than one mode was selected. (Powerup Default=0).
5FIROn .......................................................... RO
When set to ‘1’, indicates a valid FIR configuration.
(Powerup Default=0).
4MIROn .......................................................... RO
When set to ‘1’, indicates a valid MIR configuration.
(Powerup Default=0).
3SIROn.................................................................. RO
When set to ‘1’, indicates a valid SIR configuration.
(Powerup Default=0).
2Transmit............................................................... RO
0 Disabled .................................................default
1 Enabled at the physical layer
1 Receive .................................................................. RO
0 Disabled .................................................default
1 Enabled at the physical layer
0 CRC 16 / 32 .......................................................... RO
0 32-bit CRC generation
1 16-bit CRC generation
Offset 16 – Infrared Status Low 1 (00h).......................... RO
7-5 SIR/MIR Pulse Width [2:0] (see Table 7 below) RO
4-0 Preamble [4:0] ......................................................RO
Number of Preamble bytes to send in MIR and FIR
mode. For MIR this is the number of start flags plus
1, for FIR it is the number of preamble bytes plus 1.
(i.e., 0 means 1 byte). (see Table 7 below).
Offset 17 – Infrared Status High 1 (00h)......................... RO
7-2 Data Baud Rate [5:0] (see Table 7 below)...........RO
1-0 SIR/MIR Pulse Width [4:3] (see Table 7 below) RO
Offset 18 – Infrared Configuration Low 1 (00h).. ......... RW
7-5 SIR/MIR Pulse Width [2:0] (see Table 7 below)
.............................................. default = 0
4-0 Preamble [4:0] (see Table 7 below).......... default = 0
Number of Preamble bytes to send in MIR and FIR
mode. For MIR this is the number of start flags plus
1, for FIR it is the number of preamble bytes plus 1.
(ie, 0 means 1 byte).
Offset 19 – Infrared Configuration High 1 (00h) .......... RW
7-2 Data Baud Rate [5:0] (see Table 7 below)
.............................................. default = 0
1-0 SIR/MIR Pulse Width [4:3] (see Table 7 below)
.............................................. default = 0
Table 7. IR Operational Modes
Pulse Width
Mode
Baud
Rate
Min Nom Max
Preamble
SIR (2400) 47d 0d 12d 12d don’t care
SIR (9600) 11d 0d 12d 12d don’t care
SIR (19200) 5d 1d 12d 12d don’t care
SIR (38400) 2d 3d 12d 14d don’t care
SIR (57600) 1d 5d 12d 16d don’t care
SIR (115200) 0d 11d 12d 20d don’t care
MIR 0 8d 1
FIR 0 don’t care 14d (0Eh)
Offset 1A – Infrared Configuration Low 2 (00h) .......... RW
7-0 Max Allowable Receive Packet [7:0] ............ def = 0
This is used to indicate the maximum length in bytes
of a receive packet (see Rx1B below for bits 12-8).
Offset 1B – Infrared Configuration High 2 (00h).......... RW
7-5 Reserved. ............................................always reads 0
4-0 Max Allowable Receive Packet [12:8] .......... def = 0
Used to indicate the maximum length in bytes of a
receive packet (see Rx1A above for bits 7-0).