cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 126
cs5535
Manufacturer Part Number
cs5535
Description
Geode Cs5535 Companion Multi-function South Bridge
Manufacturer
National Semiconductor Corporation
Datasheet
1.CS5535.pdf
(555 pages)
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UART/IR Controller Functional Description
4.11.1 Operational Modes
This section describes the operation modes of the
UART/IR Controller. Although each mode is unique, certain
system resources and features are common.
Bank 0
Bank 1
04-07h RSVD
Bank 2
Bank 3
Offset Name
00h
00h
01h
02h
03h
04h
05h
06h
07h
00h
01h
02h
03h
00h
01h
02h
03h
04h
05h
06h
07h
00h
01h
I/O
RXD
TXD
IER
(Note 1)
IER
(Note 2)
EIR
(Note 1)
EIR
(Note 2)
FCR
LCR
BSR
MCR
(Note 1)
MCR
(Note 2)
LSR
MSR
SPR
(Note 1)
ASCR
(Note 2)
LBGD_L
LBGD_H
RSVD
LCR
BSR
BGD_L
BGD_H
EXCR1
BSR
EXCR2
RSVD
TXFLV
RXFLV
MRID
SH_LCR
ER_INF
RSVD
RXD7
BKSE
BKSE
BKSE
BKSE
BKSE
LOCK
TXD7
DCD
CTE
7
RXFTH[1:0]
Table 4-19. UART/IR Controller Native Register Bit Map
FEN[1:0]
RSVD
RSVD
RSVD
RSVD
RSVD
MDSL[2:0]
TXEMP
RXD6
SBRK
RSVD
TXUR
SBRK
RSVD
SBRK
TXD6
RI
6
MID[3:0]
RSVD
TXEMP_EV
TXEMP_IE
EDTLBK
TXRDY
RXACT
RXD5
TXD5
STKP
STKP
STKP
DSR
5
TXFTH[1:0]
PRESL[1:0]
RSVD
126
DMA_EV
RXWDG
DMA_IE
IR_PLS
(Continued)
LOOP
LOOP
RXD4
TXD4
EPS
BRK
CTS
EPS
EPS
This discussion references several bits in the UART/IR
Controller Native register set. Table 4-19 provides the bit
map for the UART/IR Controller Native registers for the
reader’s convenience. For full bit descriptions, refer to Sec-
tion 5.12.2 on page 366.
4
Scratch Data
LBGD[15:8]
LBGD[7:0]
BGD[15:8]
BGD[7:0]
RSVD
RSVD
RSVD
DMASWP
BSR[6:0]
BSR[6:0]
BSR[6:0]
TX_DFR
ISEN or
MS_EV
DCDLP
MS_IE
MS_IE
DDCD
RXD3
RSVD
RSVD
TXD3
RXFT
PEN
PEN
PEN
FE
3
RF_SIZ[1:0]
TFL[5:0]
RFL[5:0]
TXHLT_EV
DMA_EN
LS_EV/
DMATH
S_OET
LS_IE
LS_IE
RXD2
TXD2
TXSR
TERI
RILP
STB
STB
STB
PE
2
RID[3:0]
IPR[1:0]
TXLDL_EV
TXLDL_IE
TXLDL_IE
DMANF
RXSR
DDSR
RSVD
RXD1
WLS1
WLS1
TXD1
RTS
RTS
OE
1
TF_SIZ1[1:0]
WLS[1:0]
RXF_TOUT
RXHDL_IE
RXHDL_IE
RXHDL_IE
FIFO_EN
EXT_SL
RXD0
RXDA
DCTS
WLS0
WLS0
TXD0
Revision 0.8
DTR
DTR
IPF
0
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