XR17D158CV-F Exar Corporation, XR17D158CV-F Datasheet - Page 20

• 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
A 16-bit down-count timer for general purpose timer or counter. Its clock source may be selected from internal
crystal oscillator or externally on pin TMRCK. The timer can be set to be a single-shot for a one-time event or
re-triggerable for continue interval. An interrupt may be generated in the INT Register when the timer times out.
It is controlled through 4 configuration registers [TIMERCNTL, TIMER, TIMELSB, TIMERMSB]. These
registers provide start/stop and re-triggerable or one-shot operation. The time-out output of the Timer can be
set to generate an interrupt for system or event alarm.
TIMER [15:8] Reserved
TIMERCNTL [0]
TIMERCNLT [1]
TIMERCNTL [2]
TIMERCNTL [3]
TIMERCNTL [4]
TIMERCNTL [7:5]
2.2.2
F
IGURE
General Purpose 16-bit Timer/Counter [TIMERMSB, TIMELSB, TIMER, TIMECNTL] (
0
X
XX-XX-00-00)
7. T
TIMERCNTL [3]
TIMERCNTL [1]
TIMERCNTL [2]
TIMERCNTL [0]
TIMERCNTL [4]
TIMERMSB and TIMERLSB
OSC. CLOCK
IMER
Logic zero (default) disables Timer-Counter interrupt and logic one enables the interrupt, reading the
TIMERCNTL clears the interrupt.
Logic zero (default) stops/pauses the timer and logic one starts/re-starts the timer/counter.
Logic zero (default) selects re-trigger timer function and logic one selects one-shot (timer function.
Logic zero (default) selects internal and logic one selects external clock to the timer/counter.
Routes the Timer-Counter interrupt to MPIO[0] if MPIOSEL[0]=0 for external event control.
Reserved (defaults to zero)
TMRCK
(16-bit Value)
/C
OUNTER CIRCUIT
Timer Interrupt Enable
Start/Stop
Single/Re-triggerable
Clock
Select
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2
Rsvd
1
0
T
ABLE
Rsvd
.
8: TIMER CONTROL R
Rsvd
Timer/Counter
TIMERCNTL Register
16-Bit
MPIO[0]
Control
Re-trigger
20
Select
Clock
0
1
Time-out
Single-shot
Re-trigger
Single/
EGISTERS
1
0
Bit-1 Bit-0
Start/
Stop
No Interrupt
Timer Interrupt, Ch-0 INT=7
Enable
1
0
INT
MPIOLVL[0]
MPIO[0]
xr
REV. 1.2.2
DEFAULT