Hardware Specification
21
110124-7000A
System Management I/O
The I/O port on the SMBus provides sixteen GPIO for control of on-board functionality. This port is
implemented by two NXP PCA9554 devices with each device supplying eight bits of general-purpose
I/O expansion. For the SMBus address of these devices, see
, page
The following table lists the function of each SMBus GPIO on the Vector.
SMBus GPIO Name
Type Description
0
RS485/232_B
O
Serial port 2 mode select
(1 = EIA-485, 0 = EIA-232)
1
LVDS_PDWN#
O
Optional LVDS buffer shutdown
(1 = on, 0 = off)
2
LAN_ENABLE
O
Ethernet controller enable
(1 = enable, 0 = disable)
3
RS485/232_A
O
Serial port 1 mode select
(1 = EIA-485, 0 = EIA-232)
4
BUF_ON
O
Serial port buffer enable
(1 = enable, 0 = disable)
5
LED_GREEN
O
Green LED control (D58)
(0 = off, 1 = on)
6
LED_RED
O
Red LED control (D57)
(0 = off, 1 = on)
7
WIFI_PD#
O
Mini PCIe expansion slot WIFI power down
(1 = on, 0 = off)
8
USB5_EN#
O
USB host 5 power enable
(1 = off, 0 = on)
9
USB1_EN#
O
USB host 1 power enable
(1 = off, 0 = on)
10
USB2_EN
O
USB client enable
(1 = on, 0 = off)
11
USB3_EN
O
USB host 3 power enable
(1 = on, 0 = off)
12
USB4_EN
O
USB host 4 power enable
(1 = on, 0 = off)
13
CHAN_SEL
O
PCIe multiplexer select
(1 = SATA drive, 0 = Mini PCIe expansion slot)
14
ATA_FLASH_WP
O
PATA SSD write protect
(1 = write protect, 0 = write enable)
15
ATA_FLASH_POR
O
PATA SSD power on reset
(1 = reset, 0 = normal operation)
Table 6. SMBus GPIO
System Monitoring
The embedded controller provides hardware monitoring for temperature and voltage. Temperature
monitoring measures temperatures on the Intel Atom processor and near the memory chips. Voltage
monitoring measures the input power and on-board voltage regulators.
