ST16C654CJ68 EXAR [Exar Corporation], ST16C654CJ68 Datasheet - Page 12

• Manufacturer Part Number: ST16C654CJ68
• Description: QUAD UART WITH 64-BYTE FIFO AND INFRARED (IrDA) ENCODER/DECODER
• Manufacturer: EXAR [Exar Corporation]

ST16C654/654D
SYMBOL DESCRIPTION
RX/IRRX A-B
RX/IRRX C-D
TX/IRTX A-B
TX/IRTX C-D
Symbol
Rev. 4.10
17,19
41,63
51,53
7,29
68
97,34
47,85
14,16
65,67
Pin
100
62,20
29,51
39,41
8,10
64
Signal
type
O
I
associated with individual serial channel data to the
ST16C654. Two user selectable interface options are avail-
able. The first option supports the standard modem inter-
face. The second option provides an Infrared decoder
interface, see figures 2/3. When using the standard modem
interface, the RX signal will be a logic 1 during reset, idle (no
data), or when the transmitter is disabled. The inactive state
(no data) for the Infrared decoder interface is a logic 0. MCR
bit-6 selects the standard modem or infrared interface.
During the local loopback mode, the RX input pin is disabled
and TX data is internally connected to the UART RX Input,
internally.
vidual serial transmit channel data from the 654. Two user
selectable interface options are available. The first user
option supports a standard modem interface. The second
option provides an Infrared encoder interface, see figures 2/
3. When using the standard modem interface, the TX signal
will be a logic 1 during reset, idle (no data), or when the
transmitter is disabled. The inactive state (no data) for the
Infrared encoder/ decoder interface is a Logic 0. MCR bit-
6 selects the standard modem or infrared interface. During
the local loopback mode, the TX input pin is disabled and TX
data is internally connected to the UART RX Input.
Receive Data Input RX/IRRX A-D. - These inputs are
Transmit Data - These outputs are associated with indi-
5-76
Pin Description