pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 182

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

www.national.com
7.14.3 Shadow of FIFO Control Register (SH_FCR)
This read-only register returns the contents of the FCR reg-
ister in bank 0.
See “FIFO Control Register (FCR)” on page 170 for bit de-
scriptions.
7.14.4 Link Control Register (LCR) and Bank Select
These registers are the same as the registers at offset 03h
in bank 0.
7.15 BANK 4 – IR MODE SETUP REGISTER
7.15.1 Reserved Registers
Bank 4 registers with offsets 00h and 01h are reserved.
00-01h
04-07h
0
Offset
7
02h
03h
RXFTH1
0
6
FIGURE 7-30. SH_LCR Register Bitmap
Register (BSR)
RXFTH0
0
5
TABLE 7-18. Bank 4 Register Set
Register
TXFHT1
0
4
IRCR1
Name
LCR/
BSR
TXFTH0
0
3
Reserved
0
2
TXSR
0
1
RXSR
Infrared Control Register 1
0
0
Reserved
Reserved
Bank Select Registers
Reset
Required
FIFO_EN
Enhanced Serial Port with IR - UART2 (Logical Device 5)
FIFO Control Register
Link Control/
Description
Shadow of
Offset 02h
(SH_FCR)
Bank 3,
182
7.15.2 Infrared Control Register 1 (IRCR1)
Enables the Sharp-IR or SIR infrared mode in the Non-Ex-
tended mode of operation.
Upon reset, all bits are set to 0.
Bits 1,0 - Reserved
Bits 3,2 - Sharp-IR or SIR Mode Select (IR_SL1,0), Non-
Extended Mode Only
Bits 7-4 - Reserved
7.15.3 Link Control Register (LCR) and Bank Select
These registers are the same as the registers at offset 03h
in bank 0.
7.15.4 Reserved Registers
Bank 4 registers with offsets 04h-07h are reserved.
0
0
7
Read/Write 0.
These bits enable Sharp-IR and SIR modes in Non-Ex-
tended mode. They allow selection of the appropriate in-
frared interface when Extended mode is not selected.
These bits are ignored when Extended mode is selected.
Read/Write 0.
IR_SL1
TABLE 7-19. Sharp-IR or SIR Mode Selection
0
0
6
0
0
1
1
Register (BSR)
FIGURE 7-31. IRCR1 Register Bitmap
0
0
5
Reserved
0
0
4
IR_SL0
0
3
0
1
0
1
IR_SL1
0
2
IR_SL0
0
0
1
Reserved
0
0
0
Infrared Control Register1
Reserved
Reset
Required
Selected Mode
UART (Default)
Sharp-IR
Reserved
SIR
Offset 02h
Bank 4,
(IRCR1)