XR17D154IV Exar Corporation, XR17D154IV Datasheet - Page 67

• Manufacturer Part Number: XR17D154IV
• Description: Universal QUART W/ PCI Bus Interface.
• Manufacturer: Exar Corporation

Specifications of XR17D154IV

• Features: *
• Number Of Channels: 4, QUART
• Fifo's: 64 Byte
• Protocol: RS485
• Voltage - Supply: 3.3V, 5V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

xr
REV. 1.2.2
GENERAL DESCRIPTION................................................................................................. 1
FEATURES......................................................................................................................... 1
PIN DESCRIPTIONS .......................................................................................................... 3
FUNCTIONAL DESCRIPTION ........................................................................................... 7
1.0 APPLICATION EXAMPLES .................................................................................................................. 8
2.0 XR17D154 REGISTERS ...................................................................................................................... 10
3.0 CRYSTAL OSCILLATOR / BUFFER ................................................................................................... 23
4.0 TRANSMIT AND RECEIVE DATA ...................................................................................................... 24
5.0 UART .................................................................................................................................................... 27
A
ORDERING INFORMATION
PCI LOCAL BUS INTERFACE .................................................................................................................... 3
MODEM OR SERIAL I/O INTERFACE........................................................................................................ 3
ANCILLARY SIGNALS ................................................................................................................................ 4
PPLICATIONS
PCI Local Bus Interface............................................................................................................................................... 7
PCI Local Bus Configuration Space Registers ............................................................................................................ 7
EEPROM Interface ...................................................................................................................................................... 7
2.1 PCI LOCAL BUS CONFIGURATION SPACE REGISTERS .......................................................................... 10
2.2 DEVICE CONFIGURATION REGISTER SET ................................................................................................ 12
4.1 DATA LOADING AND UNLOADING VIA 32-BIT PCI BURST TRANSFERS ............................................... 24
4.2 FIFO DATA LOADING AND UNLOADING THROUGH THE UART CHANNEL REGISTERS, THR AND RHR IN
5.1 PROGRAMMABLE BAUD RATE GENERATOR ........................................................................................... 27
5.2 TRANSMITTER ............................................................................................................................................... 28
F
F
T
F
F
F
T
T
T
T
F
T
T
F
T
F
F
F
T
F
T
IGURE
IGURE
ABLE
IGURE
IGURE
IGURE
ABLE
ABLE
ABLE
ABLE
IGURE
ABLE
ABLE
IGURE
ABLE
IGURE
IGURE
IGURE
ABLE
IGURE
ABLE
2.2.1 THE INTERRUPT STATUS REGISTER ..................................................................................................................... 15
2.2.2 GENERAL PURPOSE 16-BIT TIMER/COUNTER [TIMERMSB, TIMELSB, TIMER, TIMECNTL] (DEFAULT 0XXX-XX-
2.2.3 8XMODE [7:0] - (DEFAULT 0X00) ............................................................................................................................. 18
2.2.4 REGA [15:8] RESERVED ........................................................................................................................................... 18
2.2.5 RESET [23:16] - (DEFAULT 0X00)............................................................................................................................. 18
2.2.6 SLEEP [31:24] - (DEFAULT 0X00)............................................................................................................................ 19
2.2.7 DEVICE IDENTIFICATION AND REVISION............................................................................................................... 20
2.2.8 REGB REGISTER ....................................................................................................................................................... 20
2.2.9 MULTI-PURPOSE INPUTS AND OUTPUTS .............................................................................................................. 20
2.2.10 MPIO REGISTER ...................................................................................................................................................... 21
4.1.1 NORMAL RX FIFO DATA UNLOADING AT LOCATIONS 0X100, 0X300, 0X500, 0X700....................................... 24
4.1.2 SPECIAL RX FIFO DATA UNLOADING AT LOCATIONS 0X180, 0X380, 0X580, AND 0X780 .............................. 25
4.1.3 TX FIFO DATA LOADING AT LOCATIONS 0X100, 0X300, 0X500, 0X700 ............................................................. 26
8-BIT FORMAT .............................................................................................................................................. 26
1: V
2: PCI L
3: XR17D154 D
4: D
5: D
6: UART C
7: UART C
8: TIMER CONTROL R
9: T
10: T
1. B
2. P
3. T
4. T
5. T
6. T
7. T
8. M
9. T
10. E
11. B
00-00) ............................................................................................................................................................................. 17
RANSMIT AND
ALID
EVICE
EVICE
LOCK
IN
YPICAL
YPICAL
HE
HE
IMER
YPICAL OSCILLATOR CONNECTIONS
YPICAL DATA RATES WITH A
ULTIPURPOSE INPUT
............................................................................................................................................... 1
XTERNAL
AUD
O
XR17D154 R
OCAL
G
C
UT OF THE
/C
LOBAL
C
C
OMBINATIONS OF
D
HANNEL
HANNEL
R
OUNTER CIRCUIT
ONFIGURATION
ONFIGURATION
A
A
IAGRAM
ATE
PPLICATION FOR A
PPLICATIONS IN AN
B
US
C
EVICE
I
G
NTERRUPT
LOCK
R
................................................................................................................................ 2
C
ENERATOR
ECEIVE
[3:0] I
[3:0] I
D
............................................................................................................................................................. 1
ONFIGURATION
EVICE
EGISTER
C
C
ONFIGURATION
EGISTERS
/
ONNECTION FOR
NTERRUPT
NTERRUPT
OUTPUT INTERNAL CIRCUIT
D
R
R
.................................................................................................................................................. 2
VCC
............................................................................................................................................... 17
R
ATA
EGISTERS SHOWN IN
EGISTERS SHOWN IN
............................................................................................................................................. 27
EGISTER
S
U
14.7456 MH
ETS
E
R
AND
NIVERSAL
TABLE OF CONTENTS
...................................................................................................................................... 17
MBEDDED
EGISTER IN
S
S
C
.................................................................................................................................. 10
PACE
VIO S
OURCE
LEARING
, INT0, INT1, INT2
............................................................................................................................... 23
R
EGISTERS
E
R
XTENDED
A
UPPLY
S
EGISTERS
E
Z CRYSTAL OR EXTERNAL CLOCK AT
DD
YSTEM
B
: .................................................................................................................. 17
NCODING
YTE FORMAT
-
IN
BYTE
DWORD
............................................................................................................. 13
V
C
........................................................................................................... 21
OLTAGES
............................................................................................................ 9
D
ARD
ATA
....................................................................................................... 11
..................................................................................................... 16
I
ALIGNMENT
.................................................................................................... 8
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
AND
R
ALIGNMENT
, 16C550
ATE
.............................................................................................. 8
INT3 .................................................................................. 16
........................................................................................ 23
................................................................................... 14
COMPATIBLE
.............................................................................. 14
16X S
............................................................ 26
AMPLING
........................................ 28
XR17D154