SB16C1058_Data Sheet_EN

SB16C1058
OCTAL UART WITH 256-BYTE FIFO
JULY 2013 REV 1.04
15
Table 3: Pin Usage between Normal mode and MIO mode
PIN Name
Normal mode
MIO mode
Description
ADDR0
ADDR0
ADDR0
Normal mode (nCS)
ADDR[2:0] : UART registers selection
ADDR[5:3] : 8 UARTs selection
MIO mode (nUART)
ADDR[5:0] : same as the normal mode
ADDR[7:6] : 4 Panels selection
MIO mode (OPT#)
ADDR[5:0] : option registers selection
ADDR1
ADDR1
ADDR1
ADDR2
ADDR2
ADDR2
ADDR3
ADDR3
ADDR3
ADDR4
ADDR4
ADDR4
ADDR5
ADDR5
ADDR5
ADDR6
Not Used
ADDR6
ADDR7
Not Used
ADDR7
DATA[7:0]
DATA[7:0]
DATA[7:0]
IOR#
IOR#
IOR#
IOW#
IOW#
IOW#
CS#_UART#
nCS
nUART
OPT#
Not Used
OPT#
Option Register Access Enable
BUF#
Not Used
BUF#
MIO Bus Read Enable for 245 Buffer
IDASY[1:0]
Not Used
IDASY[1:0]
Input Daisy Chain for 8-port Unit Block
ODASY[1:0]
Not Used
ODASY[1:0]
Output Daisy Chain for 8-port Unit Block
PNEN0#_OSC0
Not Used
PNEN0#_OSC0
Input @ Initial Time : OSC[1:0], INTF[1:0]
Output @ Normal : PNEN#[3:0]
PNEN1#_OSC1
Not Used
PNEN1#_OSC1
PNEN2#_INTF0
Not Used
PNEN2#_INTF0
PNEN3#_INTF1
Not Used
PNEN3#_INTF1
6.2 MIO mode
SB16C1058 operates in MIO mode with MODE = 1b.
SB16C1058 contains built-in Control Logics that allow expansion of up to 32 ports (by 8
ports) by adding MIO Bus Interface and Option Registers structure on a common Octal-
UART. Through this method, glue-logics are unnecessary when expanding ports. With
SystemBase’s PCI Bridge Controller SB4002A, 8, 16, 24 and 32 port serial
communication PCI Card Adapter application can be made easily with low cost.
In MIO mode, ADDR[7:0] 8-bits are used. ADDR[7:6] are used to select one of 4 Octal
UARTS, ADDR[5:3] are used to select one of the 8 UART channels and ADDR[2:0] are
used to select UART channel’s internal registers. To manage the install information of
Octal UARTs that are managed by 8 ports on MIO Bus, Daisy Chain is used and the
connections are IDASY[1:0] and ODASY[1:0]. PNEN0#_OSC0, PNEN1#_OSC1,
PNEN2#_INTF0 and PNEN3#_INTF1 are used for management of Oscillator and