SB16C1058_Data Sheet_EN

SB16C1058
OCTAL UART WITH 256-BYTE FIFO
JULY 2013 REV 1.04
11
Table 2: Pin Description…continued
Name
Pin
Type
Description
CTS0#
CTS1#
CTS2#
CTS3#
CTS4#
CTS5#
CTS6#
CTS7#
70
82
92
108
120
2
14
24
I
I
I
I
I
I
I
I
Clear to Send (active low). These pins indicate the modem is ready to
accept transmitted data from the UART, and affect transmit and receive
operations only when Auto-CTS function is enabled.
DTR0#
DTR1#
DTR2#
DTR3#
DTR4#
DTR5#
DTR6#
DTR7#
69
81
91
107
119
1
13
23
O
O
O
O
O
O
O
O
Data Terminal Ready (active low). These pins indicate UART is ready to
transmit or receive data.
DSR0#
DSR1#
DSR2#
DSR3#
DSR4#
DSR5#
DSR6#
DSR7#
71
83
93
109
121
3
15
25
I
I
I
I
I
I
I
I
Data Set Ready (active low). These pins indicate modem is powered-on
and is ready for data exchange with UART.
DCD0#
DCD1#
DCD2#
DCD3#
DCD4#
DCD5#
DCD6#
DCD7#
76
86
102
112
124
6
18
28
I
I
I
I
I
I
I
I
Carrier Detect (active low). These pins indicate that a carrier has been
detected by modem.
RI0#
RI1#
RI2#
RI3#
RI4#
RI5#
RI6#
RI7#
77
87
103
113
125
7
19
29
I
I
I
I
I
I
I
I
Ring Indicator (active low). These pins indicate the modem has received a
ringing signal from telephone line. A low to high transition on these input
pins generates a modem status interrupt, if enabled.