ASIX AX99100 User Manual

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Copyright © 2016 ASIX Electronics Corporation. All rights reserved.
AX99100
PCIe to Multi I/O Controller
Table 3-2: Chip Mode Selection Table
CHIP_
Mode[2:0]
4MP
2S1SPI
2S2MP
2MP1SPI
4S
2MP1P
2S1P
LB
111
110
101
100
011
010
001
000
Port 1
Multi-
Protocol
Serial
Port
Serial
Port
Multi-
Protocol
Serial
Port
Multi-
Protocol
Serial
Port
Local
Bus
Port 2
Multi-
Protocol
Serial
Port
Serial
Port
Multi-
Protocol
Serial
Port
Multi-
Protocol
Serial
Port
Port 3
Multi-
Protocol
GPIO
Multi-
Protocol
GPIO
Serial
Port
Parallel
Port
Parallel
Port
Port 4
Multi-
Protocol
SPI
Multi-
Protocol
SPI
Serial
Port
Note: The AX99100 Multi-protocol Mode is designed to support the Multi-protocol transceiver. Please contact ASIX
product support for the detail.
DTR Boot Strapping Pins for Serial Port 3.2
Each Serial Port or Serial Port with multi-protocol transceivers mode can support for RS-232 or RS-485 function, the
DTR/DXEN pin will has different behavior for the both mode. In Hardware design, each DTR/DXEN pin has internal
pull-down during reset. User may use the external pull-up resister to decide which mode is selected for operation.
Pins
Signal Name
Description
8
DTR_MODE[0]
DTR Mode Select bit 0 for Serial Port 1
1: Added external pull-up resistor to this pin. It works for RS-232
mode with active low.
0: Otherwise, means to use internal pull-down to this pin. It works
for RS-485 mode with active high.
67
DTR_MODE[1]
DTR Mode Select bit 1 for Serial Port 2
1: Added external pull-up resistor to this pin. It works for RS-232
mode with active low.
0: Otherwise, means to use internal pull-down to this pin. It works
for RS-485 mode with active high.
49
DTR_MODE[2]
DTR Mode Select bit 2 for Serial Port 3
1: Added external pull-up resistor to this pin. It works for RS-232
mode with active low.
0: Otherwise, means to use internal pull-down to this pin. It works
for RS-485 mode with active high.
41
DTR_MODE[3]
DTR Mode Select bit 3 for Serial Port 4
1: Added external pull-up resistor to this pin. It works for RS-232
mode with active low.
0: Otherwise, means to use internal pull-down to this pin. It works
for RS-485 mode with active high.
Table 3-3: DTR Mode selection Pins

ASIX AX99100 Specifications

General

Brand	ASIX
Model	AX99100
Category	Controller
Language	English