XR17D158CV-F Exar Corporation, XR17D158CV-F Datasheet - Page 38

• Manufacturer Part Number: XR17D158CV-F
• Description: IC UART PCI BUS OCTAL 144LQFP
• Manufacturer: Exar Corporation
• Type: IrDA or RS- 485r

Specifications of XR17D158CV-F

• Number Of Channels: 8
• Package / Case: 144-LQFP
• Features: *
• 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
• Data Rate: 6.25 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current: 5 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• No. Of Channels: 8
• Uart Features: Tx/Rx FIFO Counters
• Supply Voltage Range: 3V To 5.5V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 144
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1291

XR17D158
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
The 8 sets of UART configuration registers are decoded using address lines A8 to A11 as shown below.
Address lines A0 to A3 select the 16 registers in each channel. The first 8 registers are 16550 compatible with
EXAR enhanced feature registers located on the upper 8 addresses. Addresses 0x080 to 0x093 comprise the
Device Configuration Registers and they reside in Channel 0’s space.
.
5.7
A3
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
A
A2
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
DDRESS
UART CHANNEL CONFIGURATION REGISTERS AND ADDRESS DECODING
A1
0
0
0
0
0
1
1
1
0
0
1
1
1
0
0
1
A0
0
0
0
1
1
0
0
1
0
1
0
0
1
0
1
0
RHR - Receive Holding Register
THR - Transmit Holding Register
DLL - Div Latch Low
DLM - Div Latch High
IER - Interrupt Enable Register
ISR - Interrupt Status Register
FCR - FIFO Control Register
LCR - Line Control Register
MCR - Modem Control Register
LSR - Line Status Register
MSR - Modem Status Register
RS485 Turn-Around Delay Register
SPR - Scratch Pad Register
FCTR - Feature Control Register
EFR - Enhanced Function Register
TXCNT - Transmit FIFO Level Counter
T
ABLE
12: UART CHANNEL CONFIGURATION REGISTERS
A11
0
0
0
0
1
1
1
1
R
A10
EGISTER
16550 C
0
0
1
1
0
0
1
1
E
NHANCED
OMPATIBLE
A9
0
1
0
1
0
1
0
1
38
R
EGISTERS
A8
0
0
0
0
0
0
0
0
R
EGISTERS
UART C
S
ELECTION
0
1
2
3
4
5
6
7
HANNEL
R
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read-only
Read-only
Read-only
Read-only
Read-only
Write-only
Write-only
Write-only
EAD
/W
RITE
xr
C
LCR[7] = 0
LCR[7] = 0
LCR[7] = 1
LCR[7] = 1
LCR[7] = 0
OMMENTS
REV. 1.2.2