ZALM-301-1 Datasheet, PDF (11/19 Pages) California Eastern Labs – APEX LT SERIES TRANSCEIVER MODULES

ZALM-300 Series
APEX LT I/O pin assignments
Pin #
Name
Type Description
1
GROUND
GND Ground
2
GROUND
GND Ground
3
GROUND
GND Ground
4
GROUND
GND Ground
5
VDD
PI Power Supply Input
6
nRESET
DI Reset, active low
7
MOSI
DI SPI Data, Master Out/Slave In (from Host to APEX LT)
8
MISO
DO SPI Data, Master In/Slave Out (from APEX LT to Host)
D ₉
SCLK
DI SPI Clock (from Host to APEX LT)
E ¹⁰
VPA_EN
DI APEX LT Enable, active high (see section of “Power Amplifier Regulator
Control Line”)
11
nRTS
DO UART RTS
D ₁₂
nSSEL_INT/nCTS
DI SPI Slave Select (from Host to APEX LT)/UART CTS
N ^{N 13}
PTI_EN
DO PTI Frame signal
14
PTI_DATA
DO PTI Data signal
E _IG ¹⁵
TXD
DO UART TXD
16
nHOST_INT/RXD DO/DI Host Interrupt Signal (from APEX LT to Host) or UART RXD
M ¹⁷
nWAKE
DI Wake Interrupt Signal (from host to APEX LT)
S ₁₈
GROUND
GND Ground
M ^{E 19}
SIF_CLK
DI SIF Interface clock
20
SIF_MISO
DO SIF Interface master in/slave out
O ^{D 21}
SIF_MOSI
DI SIF Interface master out/slave in
22
nSIF_LOAD
DI/DO SIF Interface load strobe
C ²³
SDBG
DO Spare Debug Signal
E ^{W 24}
LINK_ACTIVITY
DO Link and Activity signal
25
GROUND
GND Ground
E 26
GROUND
GND Ground
R ₂₇
GROUND
GND Ground
N ₂₈
GROUND
GND Ground
T _{Unused I/O pins should be left unconnected and the pin state set via the Host Protocol.}
O ^{R DI = Digital Input}
PI = Power Input
DO = Digital Output
GND = Ground
N ^{O AI = Analog Input}
F ^{AO = Analog Output}