sc28l198 NXP Semiconductors, sc28l198 Datasheet - Page 29

• Manufacturer Part Number: sc28l198
• Description: Octal Uart For 3.3v And 5v Supply Voltage
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 32. GIBCR – Global Interrupting Byte Count
Table 33. Global Interrupting Type Register
A register associated with the interrupting channel as defined in the
CIR. It contains the type of interrupt code for all interrupts.
Table 34. GRxFIFO – Global RxFIFO Register
The RxFIFO of the channel indicated in the CIR channel field.
Undefined when the CIR interrupt context is not a receiver interrupt.
Global TxFIFO Register
Table 36. IPR – Input Port Register,
This register may be read to determine the current level of the I/O
pins and examine the output of the change detectors assigned to
Table 37. I/OPIOR – I/O Port Interrupt and Output Register
I/OPIOR[7:4] bits activate the input change of state detectors. If a
pin is configured as an output, a b’1 value written to a I/O field has
no effect.
2006 Aug 10
Bits 7:4
Reserved
Bit 7:6
Receiver Interrupt
0x – not receiver
10 – with receive errors
11 – w/o receive errors
Bits 7:0
8 data bits of RxFIFO. MSBs set to 0 for 7, 6, 5 bit data
Bit 7
I/O3
change
0 – no change
1 – change
Bit 7
I/O3 enable
0 – disable
1 – enable
Octal UART for 3.3 V and 5 V supply voltage
Register
Bit 6
I/O2 enable
0 – disable
1 – enable
Bits 3:0
Channel byte count code
0000 = 1 AND RxRDY status set for RxFIFO
0000 = 1 AND TxRDY status set for TxD
0001 = 2
0010 = 3
.
1111 = 16
Bit 6
I/O2
change
0 – no change
1 – change
Bit 5
Transmitter Interrupt
0 – not transmitter
1 – transmitter interrupt
Bit 5
I/O1 enable
0 – disable
1 – enable
Bit 7
I/O1
change
0 – no change
1 – change
Bit 4
I/O0 enable
0 – disable
1 – enable
29
Bit 4:3
Reserved
read b’00
Bit 6
I/O0
change
0 – no change
1 – change
A register associated with the interrupting channel as defined in the
CIR. Its numerical value equals
the number of bytes minus 1 (count – 1) ready for transfer to the
transmitter or transfer from the receiver. It is undefined for other
types of interrupts
Table 35. GTxFIFO – Global TxFIFO Register
The TxFIFO of the channel indicated in the CIR channel field.
Undefined when the CIR interrupt context is not a transmitter
interrupt. Writing to the GTxFIFO when the current interrupt is not a
transmitter event may result in the characters being transmitted on a
different channel than intended.
each pin. If the change detection is not enabled or if the pin is
configured as an output, the associated change field will read b’0.
I/OPIOR[3:0] bits hold the datum which is the inverse of the datum
driven to its associated I/O pin when the I/OPCR control bits for that
pin are programmed to b’01.
Bits 7:0
8 data bits of TxFIFO. MSBs not used for 7, 6, 5 bit data
Bit 3
I/O3 output
OPR[3]
Bit 2
I/O2 output
OPR[2]
Bit 3
I/O3
state
The actual logic level at the I/O pin.
1 = high level; 0 =– low level.
Bit 2:0
Other types
000 – not ”other” type
001 – Change of State
010 – Address Recognition
Event
011 – Xon/Xoff status
100 – Not used
101 – Break Change
11x – do not occur
Bit 2
I/O2
state
Bit 1
I/O1 output
OPR[1]
Bit 1
I/O1
state
SC28L198
Product data sheet
Bit 0
I/O0 output
OPR[0]
Bit 0
I/O0
state