Motorola SSETM 5000 - Manual (Page 30)

November 11, 2004 6881094C12-A
2-8 Theory of Operation: Transceiver Board
2.4.1.3 Antenna Ports
Antenna port J101 is a hot launch connector that interfaces to the antenna connector that is part of
the control top. This interface provides the launch mechanism for the antenna. Antenna port J102
provides RF to the accessory RF connector on the back of the SSE 5000 radio. This port provides
RF energy for tuning purposes, as well as RF for a public safety microphone.
2.4.1.4 Serial EEPROM
The serial, electrostatically erasable, programmable, read-only memory (EEPROM) has the
reference designator U4 on the SSE 5000 transceiver board. This IC holds all of the transceiver
tuning data. This allows transceivers to be tuned in the factory and installed in the field without
retuning.
6 SSI_FSYNC RXFS O ssi RX SSI frame sync
7 16.8MHz F168 O RF 16.8 MHz reference clock
8 SW_B+ SWB+ I dc Switch control
9 TX_SSI_FSYNC TXFS I ssi TX SSI frame sync
10 TX_SSI_CLK TXCK I ssi TX SSI clock
11 AD4_RF_BD_ID RF_BD_ID O dc RF board ID
12 RX_SSI_DATA RXDO O ssi RX SSI data
13 ABACUS3_CS ABCS I ssi SPI Abacus chip select
14 GND GND
15 VSW1 VSW1 I dc Regulated 3.8 V
16 SPI_CLK_A SPCK I spi SPI clock
17 SPI_MISO_A MISO O spi SPI data out
18 EEPROM_SEL* EECS I spi SPI EEPROM chip select
19 TX_INHIBIT TXINH I control TX inhibit control for secure
20 GND GND
21 BAT_STATUS BSTAT O dc Battery status
22 GND GND
23 SPI_MOSI_A MOSI I/O spi SPI data I/O
24 UNI_CS USEL I spi SPI universal chip select
25 RF_RX_ATNR RX_ATNR I dc RF RX attenuator
26 POR* RSTL I/O control asynchronous reset, active low
Table 2-6. VOCON Connector P1 (Continued)
Pin No. VOCON Signal
XCVR
Signal
XCVR
I/O
Type Description