CS5535 Datasheet, PDF (390/555 Pages) National Semiconductor (TI) – Geode™ CS5535 I/O Companion Multi-Function South Bridge

UART/IR Controller Register Descriptions (Continued)
5.12.8 Bank 5 Register Descriptions
The bit formats for the registers in Bank 5 are summarized in Table 5-43. Detailed descriptions of each register follow.
Register
I/O
Offset Name
00h-02h
03h
04h
05h-07h
RSVD
BSR
IRCR2
RSVD
7
BKSE
RSVD
Table 5-43. Bank 5 Bit Map
Bits
6
RSVD
5
RSVD
4
3
RSVD
BSR[6:0]
AUX_IRRX RSVD
RSVD
2
RSVD
1
0
IRMSSL IR_FDPLX
5.12.8.1 Bank Select Register (BSR)
I/O Offset
03h
Type
R/W
Reset Value
00h
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.
5.12.8.2 IR Control Register 2 (IRCR2)
I/O Offset
04h
Type
R/W
Reset Value
02h
IRCR2 controls the basic settings of the IR modes. Upon reset, the content of this register is 02h.
7
RSVD
6
RSVD
5
RSVD
IRCR2 Register Map
4
3
AUX_IRRX
RSVD
2
RSVD
1
IRMSSL
0
IR_FDPLX
Bit Name
7:5 RSVD
4
AUX_IRRX
3:2 RSVD
1
IRMSSL
0
IR_FDPLX
IRCR2 Bit Descriptions
Description
Reserved. Write to 0.
Auxiliary IR Input Select. When set to 1, the IR signal is received from the auxiliary
input. See Table 5-51 "IR Receive Input Selection" on page 399.
Reserved. Write to 0.
MSR Register Function Select in IR Mode. This bit selects the behavior of the MSR
and Modem Status Interrupt (MS_EV) when an IR mode is selected. When a UART
mode is selected, the MSR and the MS_EV function normally and this bit is ignored.
0: MSR and MS_EV work in the IR modes as in the UART mode.
1: MSR returns 30h, and MS_EV is disabled (Default).
Enable IR Full Duplex Mode. When set to 1, the IR receiver is not masked during trans-
mission.
www.national.com
390
Revision 0.8