Table 3-2. Vocon Connector J1001 - Motorola APX 7000 Detailed Service Manual

Theory of Operation: Transceiver Board
3.1.1.2 VOCON Connector J1001
VOCON connector J1001 is a 40 pin board to board connector that connects to XCVR board
connector P101. This is a digital interface carrying DC power, control, and data between the XCVR
and VOCON boards.
Table 3-2 lists the connector pins, their signals, and functions. SPI refers to serial peripheral
interface, which is the control bus from the microprocessor. SSI is the serial synchronous interface
bus for data to and from the DSP. There is a RX SSI bus for demodulated data from the receiver and
a TX SSI bus for modulation data to the transmitter.
Pin
VOCON Signal
No.
1 GROUND
2 EEPROM_CS
3 CLK_16.8MHZ
4 GROUND
5 GROUND
6 VCC_1.875
7 RF_BRD_RSTB
8 VCC_2.775
9 DMCS
10 F2_PARAMP
11 RX_FSYNC
12 TX_INH
13 RX_DA
14 DAC_CS
15 RX_CLK
16 ISET
17 TX_FSYNC
18 TX_DA_CONN
19 TX_CLK
20 GROUND
21 GPS_ANT
22 ABACUS_CS
23 F2_SYNCB

Table 3-2. VOCON Connector J1001

XCVR Signal
GROUND
DIG_CTRL_SPI_EEPROM_PE
CLK_16_8MHZ
GROUND
GROUND
DC_LIN_1_875_D
DIG_CTRL_RSTB
DC_LIN_2_775V
DIG_CTRL_SSI_TRIGGER
DIG_CTRL_IO49
DIG_DATA_SSI_RX_FS
DIG_CTRL_TX_INHIBIT_TYPE_1
DIG _DATA _SSI _RX _DOUTA
DIG_CTRL_SPI_DAC_PE
CLK_SSI_RX
ANA_CTRL_ISET
DIG_TX_SSI_FS
DIG_DATA_TX_SSI
DIG_TX_SSI_CLK
GROUND
RF_GPS
DIG_CTRL_SPI_ABACUS_PE
DIG_SYNCB
XCVR
Type
I/O
– – –
I spi SPI EEprom chip select
O rf 16.8 MHz reference clock
– – –
– – –
I dc Regulated 1.875 V
I/O control Reset
I dc Regulated 2.775 V
I ssi SSI Trigger
I control TX Slot enable
O ssi RX SSI frame sync
I control TX inhibit control for
secure
O ssi RX SSI data
I spi SPI DAC chip select
O ssi RX SSI clock
I control Mako Ramp
I ssi TX SSI frame sync
I ssi TX SSI data
I ssi TX SSI clock
– – –
O rf GPS_RF signal
I spi SPI Abacus chip select
I control Synchronize RX SSI data
3-7
Description