Altera Embedded Peripherals IP User Manual
Page 89
Table 9-3: Avalon-MM Slave
Pin Name
Width
Direction
Description
addr
9
Input
Avalon-MM Address bus
Highest addressable byte
address is 0x118 so a 9-bit
width is required
read
Input
Avalon-MM Read indication
readdata
32
Output
Avalon-MM Read Data
Response from the slave
write
Input
Avalon-MM Write
indication
writedata
32
Input
Avalon-MM Write Data
Table 9-4: Interrupt Interface
Pin Name
Direction
Description
intr
Output
Interrupt signal
Table 9-5: Flow Control
Pin Name
Direction
Description
sin
Input
Serial Input from external link
sout
Output
Serial Output to external link
sout_oe
Output
Output enable for Serial Output to
external link
Table 9-6: Modem Control and Status
Pin Name
Direction
Description
cts_n
Input
Clear to Send
rts_n
Output
Request to Send
dsr_n
Input
Data Set Ready
dcd_n
Input
Data Carrier Detect
ri_n
Input
Ring Indicator
dtr_n
Output
Data Terminal Ready
out1_n
Output
User Designated Output1
out2_n
Output
User Designated Output2
UG-01085
2014.24.07
Interface
9-3
16550 UART
Altera Corporation
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