SC28C94A1A NXP Semiconductors, SC28C94A1A Datasheet - Page 14

• Manufacturer Part Number: SC28C94A1A
• Description: UART Interface IC UART QUAD W/FIFO
• Manufacturer: NXP Semiconductors
• Type: Quad UARTr

Specifications of SC28C94A1A

• Number Of Channels: 4
• Data Rate: 1 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current: 35 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: PLCC-52
• Description/function: Quad UART
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Lead Free Status / Rohs Status: Details
• Other names: SC28C94A1A,512

Philips Semiconductors
Table 4.
SR (Status Register)
NOTE: These status bits are appended to the corresponding data character in the receive FIFO. A read of the status register provides these
bits [7:5] from the top of the FIFO together with bits [4:0]. These bits are cleared by a reset error status command. Unless reset with the ‘Error
Reset’ (CR command 40) or receiver reset, these bits will remain active in the Status Register after the RxFIFO is empty. In block error mode,
block error conditions must be cleared by using the error reset command (command 4x) or a receiver reset.
ACR (Auxiliary Control Register)
ISR (Interrupt Status Register)
IMR (Interrupt Mask Register)
CTUR (Counter/Timer Upper Register)
CTUR (Counter/Timer Lower Register)
IPR (Input Port Register)
2006 Aug 09
Bit 7
Rec’d. Break
Quad universal asynchronous receiver/transmitter (QUART)
BRG Set
0 = set 1
1 = set 2
Change
Change
1 = High
I/O Port
I/O Port
0 = Low
1 = Yes
1 = Yes
C/T[15]
0 = No
Select
0 = No
C/T[7]
0 = off
1 = on
I/O3b
INT
*
Bit 6
Framing Error
Register Bit Formats, Duart ab. [duplicated for Duart cd] (continued)
BREAKb
BREAKb
1 = High
0 = Low
1 = Yes
1 = Yes
C/T[14]
0 = No
0 = No
0 = off
1 = on
C/T[6]
Delta
Delta
I/O2b
INT
*
Mode and Source
Bit 5
Counter/Timer
Parity Error
See text
RxRDY/
FFULLb
RxRDY/
FFULLb
1 = High
0 = Low
1 = Yes
1 = Yes
C/T[13]
0 = No
0 = No
0 = off
1 = on
C/T[5]
I/O3a
INT
*
Bit 4
Overrun Error
TxRDYb
TxRDYb
1 = High
1 = Yes
0 = Low
1 = Yes
C/T[12]
0 = No
0 = No
0 = off
1 = on
C/T[4]
I/O2a
INT
14
Bit 3
Counter
Counter
1 = High
0 = Low
1 = Yes
C/T[11]
TxEMT
1 = Yes
0 = off
1 = on
Ready
Ready
0 = No
0 = No
Delta
0 = off
1 = on
C/T[3]
I/O1b
I/O1b
INT
Bit 2
BREAKa
BREAKa
1 = High
0 = Low
TxRDY
1 = Yes
1 = Yes
C/T[10]
0 = No
0 = off
1 = on
0 = No
1 = on
C/T[2]
Delta
0 = off
I/O0b
I/O0b
Delta
Delta
INT
Bit 1
RxFULL
RxRDY/
FFULLa
RxRDY/
FFULLa
1 = High
0 = Low
1 = Yes
1 = Yes
0 = No
0 = off
1 = on
0 = No
0 = off
1 = on
C/T[9]
C/T[1]
Delta
I/O1a
I/O1a
INT
SC28C94
Product data sheet
Bit 0
TxRDYa
TxRDYa
1 = High
RxRDY
0 = Low
1 = Yes
1 = Yes
0 = No
0 = No
0 = off
1 = on
C/T[8]
C/T[0]
0 = off
1 = on
Delta
I/O0a
I/O0a
INT