ST16C654 EXAR [Exar Corporation], ST16C654 Datasheet - Page 6

• Manufacturer Part Number: ST16C654
• Description: 2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
• Manufacturer: EXAR [Exar Corporation]

   
Pin Description
MODEM OR SERIAL I/O INTERFACE
DTRC#
DTRD#
DSRA#
DSRB#
DSRC#
DSRD#
FSRS#
RTSA#
RTSB#
RTSC#
RTSD#
CTSA#
CTSB#
CTSC#
CTSD#
DTRA#
DTRB#
IRTXA
IRTXB
IRTXC
IRTXD
CDB#
CDC#
CDD#
N
CDA#
RXC
RXD
TXA
TXB
TXC
TXD
RXA
RXB
AME
64-TQFP
P
10
39
41
62
20
29
51
13
36
44
16
33
47
15
34
46
17
32
48
64
18
31
49
IN
8
5
2
3
1
-
-
-
-
-
#
68-PLCC
P
17
19
51
53
29
41
63
14
22
48
56
11
25
45
59
12
24
46
58
10
26
44
60
27
43
61
IN
7
9
-
-
-
-
-
#
100-QFP
P
IN
76
14
16
65
67
24
57
75
97
34
47
85
11
19
62
70
22
59
73
21
60
72
23
58
74
99
32
49
83
9
7
6
8
#
T
YPE
O
O
O
O
I
I
I
I
I
FIFO Status Register Select (active low input with internal pull-up).
The content of the FSTAT register is placed on the data bus when
this pin becomes active. However it should be noted, D0-D3 con-
tain the inverted logic states of TXRDY# A-D pins, and D4-D7 the
logic states (un-inverted) of RXRDY# A-D pins. A valid address is
not required when reading this status register.
UART channels A-D Transmit Data and infrared transmit data.
Standard transmit and receive interface is enabled when MCR[6] =
0. In this mode, the TX signal will be a logic 1 during reset, or idle
(no data). Infrared IrDA transmit and receive interface is enabled
when MCR[6] = 1. In the Infrared mode, the inactive state (no data)
for the Infrared encoder/decoder interface is a logic 0.
UART channel A-D Infrared Transmit Data. The inactive state (no
data) for the Infrared encoder/decoder interface is a logic 0.
Regardless of the logic state of MCR bit-6, this pin will be operating
in the Infrared mode.
UART channel A-D Receive Data or infrared receive data. Normal
receive data input must idle at logic 1 condition.
UART channels A-D Carrier-Detect (active low) or general purpose
input.
6
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
D
ESCRIPTION
ST16C654/654D
REV. 5.0.0