Philips Semiconductors
Product specification
Enhanced octal universal asynchronous
receiver/transmitter (Octal UART)
SCC2698B
RxD
D1
D2
D3
D4
D5
D6
D7
D8
RECEIVER
ENABLED
RxRDY
(SR0)
D2
FFULL
(SR1)
RxRDY/
FFULL
2
MPO
RDN
S = STATUS
D = DATA
S
D
S
D
S
D
S
D
D2
D3
D4
D1
D5 WILL
BE LOST
RESET BY
COMMAND
OVERRRUN
(SR4)
1
MPO
RTS
MPO = 1 (CR[7:4] = 1010)
NOTES;
1. Timing shown for MR1[7].
2. Shown for ACR[2:] = 111 and MR1[6] = 0.
SD00129
Figure 13. Receiver Timing
MASTER STATION
BIT 9
1
BIT 9
0
BIT 9
ADD#2 1
ADD#1
D0
TxD
TRANSMITTER
ENABLED
TxRDY
(SR2)
CSN
(WRITE]
MR1[2] = 1 ADD#2
MR1[4:3] = 11 ADD#1 MR1[2] = 0 D0
MR1[2] = 1
PERIPHERAL STATION
BIT 9
BIT 9
BIT 9
BIT 9
BIT 9
0
RxD
0
ADD#1
1
D0
0
ADD#2
1
RECEIVER
ENABLED
RxRDY
(SR0)
RDN/WRN
S = STATUS
D = DATA
S
D
S
D
ADD#1
MR1[4:3] = 11
D0
ADD#2
SD00130
Figure 14. Wake-Up Mode
25
2000 Jan 31
NXP [ NXP ]
