SC68C198 datasheet(34/49 Pages) PHILIPS

34 / 49 page

Philips Semiconductors

Product specification

SC26C198 SC68C198

SC26L198 SC68L198

Octal UART with TTL compatibility at 3.3V

and 5V supply voltages

1995 May 1

369

Table 46. Register Map, Data

A(7:0)

UART A

A(7:0)

Read

Write

1000 0000 (x80)

Mode Register a (MR2a)

1000 0001 (x81)

Status Register a (SRa)

Command Register a (CRa)

1000 0010 (x82)

Interrupt Status Register a (ISRa)

Interrupt Mask Register a (IMRa)

1000 0011 (x83)

Receiver FIFO Reg a (RxFIFOa)

Transmitter FIFO Reg a (TxFIFOa)

1000 0100 (x84)

Reserved

♣ BRG Timer Reg Upper a (BRGTRUa)

1000 0100 (x84)

Input Port Reg a (IPRa)

Reserved

1000 0101 (x85)

I/O Port Interrupt and Output a I/OPIORa)

I/O Port Interrupt and Output a (I/OPIORa)

1000 0110 (x86)

Xon/Xoff Interrupt Status Reg a (XISRa)

Reserved

1000 0111 (x87)

♣ GP Out Select Reg (GPOSR)

GP Out Select Reg (GPOSR)

1000 1011 (x8B)

♣ GP Out Clk Reg (GPOC)

GP Out Clk Reg (GPOC)

1000 1100 (x8C)

♣ Current Interrupt Reg (CIR)

♣ Update CIR

1000 1101 (x8D)

Reserved

♣ BRG Timer Reg Upper b (BRGTRUb)

1000 1110 (x8E)

♣ Global Receive FIFO Reg (GRxFIFO)

♣ Global Transmit FIFO Reg (GTxFIFO)

1000 1111 (x8F)

♣ Global Chip Configuration Reg (GCCR)

A(7:0)

UART B

A(7:0)

Read

Write

1001 0000 (x90)

Mode Register b (MR2b)

1001 0001 (x91)

Status Register b (SRb)

Command Register b (CRb)

1001 0010 (x92)

Interrupt Status Register b (ISRb)

Interrupt Mask Register b (IMRb)

1001 0011 (x93)

Receiver FIFO Reg b (RxFIFOb)

Transmitter FIFO Reg b (TxFIFOb)

1001 0100 (x94)

Reserved

♣ BRG Timer Reg Lower a (BRGTRLa)

1001 0100 (x94)

Input Port Reg b (IPRb)

Reserved

1001 0101 (x95)

I/O Port Interrupt and Output b (I/OPIORb)

1001 0110 (x96)

Xon/Xoff Interrupt Status Reg b (XISRb)

Reserved

1001 0111 (x97)

♣ GP Output Reg (GPOR)

1001 1010 (x9A)

Reserved

1001 1011 (x9B)

♣ GP Out Data Reg (GPOD)

1001 1100 (x9C)

Reserved

♣ BRG Timer Control Reg (BRGCTCR)

1001 1100 (x9C)

♣ Global Interrupt Channel Reg (GICR)

Reserved

1001 1101 (x9D)

Reserved

♣ BRG Timer Reg Lower b (BRGTRLb)

1001 1101 (x9D)

♣ Global Interrupt Byte Count (GIBCR)

Reserved

1001 1110 (x9E)

Reserved

1001 1111 (x9F)

♣ Global Interrupt Type Register (GITR)

Reserved

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