CIRCC View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
'CIRCC' PDF : 70 Pages View PDF
NAME
Tx Polarity
Rx Polarity
Half Duplex
IR Half Duplex Timeout
IR Mode
IR Location
Table 7 - Legacy Chip-Level Controls
SIZE (BITS) TYPE
DESCRIPTION
1
Input
Output Mux. Transmit Polarity
1
Input
Output Mux. Receive Polarity
1
Input
16C550A UART Half Duplex
Control
8
Input
IR Transceiver Turnaround Time
3
Input
IR Mode Register Bits
2
Input
IR Option Register Location Bits
Tx Polarity
Typically part of a 16C550A Serial Port Option
Register. The value also appears in CIrCC
Register Block One, Address Zero.
Rx Polarity
Typically part of a 16C550A Serial Port Option
Register. The value also appears in CIrCC
Register Block One, Address Zero.
Half Duplex
Typically part of a 16C550A Serial Port Option
Register. The value also appears in CIrCC
Register Block One, Address Zero.
IR Half Duplex Timeout
Typically part of a 16C550A Serial Port 2
Configuration Register. The value also appears
in CIrCC Register Block One, Address Zero.
IR Mode
Typically part of a 16C550A Serial Port Option
Register. These values are also part of the
CIrCC Block Control bits 3-5, Register Block
One, Address Zero.
IR Location
Typically part of a 16C550A Serial Port IR Option
Register. These values are the CIrCC Output
Mux bits, Register Block One, Address One.
Note: These legacy controls are uniformly
updated in the CIrCC and the Top-Level Device
Configuration Registers only when either set of
registers is explicitly written using IOW or
following a device-level POR. CIrCC software
resets will not affect the legacy bits.
9
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