Motorola SSETM 5000 service manual Antenna Ports, Serial Eeprom

2-8Theory of Operation: Transceiver Board

Table 2-6. VOCON Connector P1 (Continued)

Pin No.	VOCON Signal	XCVR	XCVR	Type	Description
		Signal	I/O
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

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.

November 11, 2004 6881094C12-A