User's Manual

LRM and PA Radio
Module
Host Interface Definition
Document p/n: 9S02-7954-A001 Rev.A
Cattron-Theimeg Inc. Proprietary and Confidential Page 3-2
3. Host Interface Definition
3.1 Pins Assignment
Description IO Signal
Pin
Number
Signal IO Description
49 50
GND
Ground
47 48
RX_BB O
RX Baseband signal
45 46
43 44
41 42
I2C clock /
SPI clock
IO/
O
I2C_SCL /
SPI_SCK
39 40
SPI_PLE I
SPI Strobe
SPI data input
I SPI_PDI
37 38
I2C_SDA /
SPI_PDO
IO /
O
I2C Data /
SPI data output
35 36
33 34
31 32
Data transfer Handshaking
Signal
O !READY
29 30
3.3V DC supply
I 3V3
27 28
Receive data
O RXD
25 26
TXD I
Transmit Data
RX Enable
I !RX_EN
23 24
!TX_EN I
Tx Enable
Serial port Configuration
mode
I !CONFIG
21 22
GND
Ground
19 20
DCLK O
Data Clock
17 18
15 16
13 14
11 12
9 10
Reset
I !RESET
7 8
CPU flash mode
I !PGM
5 6
Ground
GND-PA
3 4
GND-PA
Ground
Voltage Supply, RF power
amplifier
I VPA
1 2
VPA I
Voltage Supply, RF power
amplifier
Table 3.1 – Host Interface pins assignment