SC28C94 Philips Semiconductors, SC28C94 Datasheet - Page 32

• Manufacturer Part Number: SC28C94
• Description: Quad universal asynchronous receiver/transmitter QUART
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Aug 19
RxRDY/
FFULL
ISR(1)
RECEIVER
ENABLED
RxRDY
(SR0)
FFULL
(SR1)
RDN
OVERRUN
TRANSMITTER
ENABLED
(SR4)
NOTES;
NOTE: TIMING SHOWN FOR FIFO POWER-UP DEFAULT
1. TIMING SHOWN FOR MR1[7] = 1.
2. DEFAULT: I/O1 IS RTS AND IOPCR(5:4)
RDN/WRN
(WRITE]
Quad universal asynchronous receiver/transmitter (QUART)
ENABLED
RxD
RTS
I/O1
RECEIVER
TxRDY
CEN
(SR0)
(SR2)
RxRDY
RxD
TxD
1
MR1 [4:3] = 11
MR1 [4:3] = 11
MR1 [2] = 1
PERIPHERAL STATION
MASTER STATION
I/O1 = 1 or (CR[7:4] = 1010)
D2
ADD#1
D1
0
BIT 9
MR1 [2] = 0
S
ADD#1
D1
BIT 9
D
01
D2
1
D0
ADD#1
1
BIT 9
D0
Figure 18. Receiver Data Timing
D3
S = STATUS
D = DATA
BIT 9
ADD#1
Figure 19. Wake-Up Mode
0
D0
0
BIT 9
MR1 [2] = 1
32
D9
S
D0
D10 WILL
ADD#2
BE LOST
D
D10
S = STATUS
D = DATA
ADD#2
BIT 9
S D
D2
D11
1
ADD#2
S D
D3
BY D11, 12, ETC
OVERWRITTEN
D10 WILL BE
1
BIT 9
S D
D10
S
D12
ADD#2
Product specification
SC28C94
COMMAND
D
RESET BY
BIT 9
0
SD00176
SD00177
D13