SB16C1058-TQFP128 IK Semicon Co., Ltd, SB16C1058-TQFP128 Datasheet - Page 10

• Manufacturer Part Number: SB16C1058-TQFP128
• Description: Octal-uart Controller With 256-byte Fifo
• Manufacturer: IK Semicon Co., Ltd

IN16C1058
OCTAL UART WITH 256-BYTE FIFO
JUNE 2009
Table 2:
nTXRDY0/TXEN0
nTXRDY1/TXEN1
nTXRDY2/TXEN2
nTXRDY3/TXEN3
nTXRDY4/TXEN4
nTXRDY5/TXEN5
nTXRDY6/TXEN6
nTXRDY7/TXEN7
nRXRDY0/RXEN0
nRXRDY1/RXEN1
nRXRDY2/RXEN2
nRXRDY3/RXEN3
nRXRDY4/RXEN4
nRXRDY5/RXEN5
nRXRDY6/RXEN6
nRXRDY7/RXEN7
Modem and Serial I/O Interface
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXD6
TXD7
RXD0
RXD1
RXD2
RXD3
RXD4
RXD5
RXD6
RXD7
nRTS0
nRTS1
nRTS2
nRTS3
nRTS4
nRTS5
nRTS6
nRTS7
10
Name
Name
Pin Description…continued
REV 1.0
100
110
122
101
123
105
115
127
104
114
126
106
118
128
Pin
111
Pin
72
84
16
26
75
85
17
27
67
79
89
21
78
88
20
30
68
80
90
12
22
11
4
5
8
Type
Type
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
Transmitter Ready/Tx Enable. These pins provide individual channel
transmitter ready or transmit enable. nTXRDY0-7 are enabled when
ATR[1:0] is cleared to ‘00’ (default state). If ATR[1:0] are set to ‘11’,
nTXRDY0-7 operate as TXEN0-7. nTXRDY0-7 (active low) are asserted
by TX FIFO/THR status for transmit channels 0-7. TXEN0-7’s asserted
state is determined by ATR[5:4]. If ATR[4] is cleared to ‘0’, the state holds
the same value as ATR[5]. If ATR[4] is set to ‘1’, it is the auto-toggling
state based on ATR[5]. If these pins are unused, leave them open.
Receiver Ready/Rx Enable. These pins provide individual channel
receiver ready or receive enable. nRXRDY0-7 are enabled when ATR[1:0]
is cleared to ‘00’ (default state). If ATR[1:0] is set to ‘11’, nRXRDY0-7 are
changed to RXEN0-7. nRXRDY0-7 (active low) are asserted by RX
FIFO/RBR status for receive channels 0-7. RXEN0-7’s asserted state is
determined by ATR[7:6]. If ATR[6] is cleared to ‘0’, the state holds the
same value as ATR[7]. If ATR[6] is set to ‘1’, it is the auto-toggling state
based on ATR[7]. If these pins are unused, leave them open.
Transmit Data. These pins are individual transmit data output. During the
local loop-back mode, the TXD output pin is disabled and TXD data is
internally connected to the RXD input.
Receive Data. These pins are individual receive data input. During the
local loop-back mode, the RXD input pin is disabled and RXD data is
internally connected to the TXD output.
Request to Send (active low). These pins indicate that the UART is ready
to send data to the modem, and affect transmit and receive operations
only when Auto-RTS function is enabled.
Description
Description