User Manual

13
BPM2001-HM Interface Signal Definitions
P3 Port Pin Assignments
Pin#
Pin Name Type Description Voltage Range
1
GPIO_5 I/O I/O port power input
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
2
/PCM_SEL I
High switches SPI/PCM lines
to SPI, low switches SPI/
PCM lines to PCM/PIO use.
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
3
SPI_MOSI I
SPI data intput/PCM1 port
synchronous
data input
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
4
UART_CTS I
UART clear to send, active
low
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
5
SPI_MISO/PCM1_OU
T
O
SPI data output/PCM1 port
synchronous
data output
Voh: 0.75 X VDD
Vol: 0 – 0.4V
6
POWER_ON I
Take high to enable internal
regulators. Maximum
voltage is VREG_IN_HV.
Note:
USB l i l bl d d
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
7
SPI_CS# O
High switches SPI/PCM lines
to SPI, low switches SPI/
PCM lines to PCM/PIO use.
Voh: 0.75 X VDD
Vol: 0 – 0.4V
8
UART_RTS O
UART request to send, active
low
Voh: 0.75 X VDD
Vol: 0 – 0.4V
9
USB_5V_IN I
Input to USB regulator. Connect to
external USB
blUSBVBUS
Input voltage: 4.20V – 5.75V
10
UART_TXD O
UART data output, active
high
Voh: 0.75 X VDD
Vol: 0 – 0.4V
11
/RESET I Active low system reset
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
12
UART_RXD I UART data input, active high
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
13
GPIO0 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
14
GPIO1 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
15
GPIO4 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
16
SPI_CLK/PCM1CLK I
SPI clock/ PCM1 port synchronous
data clock
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
17
GPIO2 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
18
GPIO3 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD