SC28L201A1DGG,118 NXP Semiconductors, SC28L201A1DGG,118 Datasheet - Page 69
SC28L201A1DGG,118
Manufacturer Part Number
SC28L201A1DGG,118
Description
IC UART W/FIFO 48-TSSOP
Manufacturer
NXP Semiconductors
Series
IMPACTr
Datasheet
1.SC28L201A1DGG118.pdf
(110 pages)
Specifications of SC28L201A1DGG,118
Features
False-start Bit Detection
Number Of Channels
2, DUART
Fifo's
256 Byte
Voltage - Supply
3.3V, 5V
With Parallel Port
Yes
With Auto Flow Control
Yes
With False Start Bit Detection
Yes
With Modem Control
Yes
With Cmos
Yes
Mounting Type
Surface Mount
Package / Case
48-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
935277824118
SC28L201A1DGG-T
SC28L201A1DGG-T
SC28L201A1DGG-T
SC28L201A1DGG-T
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Philips Semiconductors
9397 750 13138
Product data sheet
8.5.1 Interrupt Control Register (ICR)
8.5.2 Update CIR (UCIR): the most important command for polled or interrupt
8.5 Registers of the Arbitrating Interrupt system and bidding control
Table 46:
This register provides a single 8-bit field called the interrupt threshold for use by the
interrupt arbiter. The field is interpreted as a single unsigned integer. The interrupt arbiter
will not generate an external interrupt request, by asserting IRQN, unless the value of the
highest priority interrupt exceeds the value of the interrupt threshold. If the highest bidder
in the interrupt arbitration is lower than the threshold level set by the ICR, the Current
Interrupt Register, CIR, will contain 0x00.
Remark: While a Watchdog Timer interrupt is pending, the ICR is not used and only
receiver codes are presented for interrupt arbitration. This allows receivers with very low
count values (perhaps below the threshold value) to win interrupt arbitration without
requiring the user to explicitly lower the threshold level in the ICR.
service
Table 47:
A write to address 0x61 data is not important. A command based upon a decode of a
write to address 0x61 (UCIR is not a register). A write (the write data is not important; a
‘Don’t care’) to this ‘register’ causes the Current Interrupt Register to be updated with the
value that is winning interrupt arbitration. The register would be used in systems that poll
the interrupt status registers rather than wait for interrupts. Alternatively, the CIR is
normally updated during an Interrupt Acknowledge Bus (IACKN) cycle in interrupt-driven
systems.
Bit
7:0
Bit
7:0
Symbol
Symbol
ICR - Interrupt Control Register (address 0x60) bit description
UCIR - Update CIR (address 0x61) bit description
Description
Upper 8 bits of the Arbitration Threshold
Description
data not important
Rev. 01 — 31 October 2005
3.3 V, 5 V UART, 3.125 Mbit/s, with 256-byte FIFO
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
SC28L201
69 of 110
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