3-20
Theory of Operation:
Transceiver Board
3.1.4.8 Port Expander
U703 is a port expander that is controlled by the auxiliary SPI of the Trident IC; pins A7
(ASPI_DATA), B7 (ASPI_CLK) and C6 (ACE1_GPO7). Data sent on the main SPI bus with a specific
header, tells the Trident IC to pass the data (via the auxiliary SPI lines) onto the port expander SPI
lines, pins 32 (SCLK), 33 (DIN) and 34 (CS). The port expander then translates this auxiliary SPI
data and turns on and off the select lines for the various VCOs, switches (that select the correct RF
path for either VHF, UHF Range 1 or 7/800) and other logic external to the FGU.
Table 3-3
below
shows the logic settings for the port expander for the various bands.
Table 3-3. Port Expander Pin Settings
VHF TX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
0
0
0
0
0
0
H
H
0
0
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
H
0
0
0
H
H
H
0
H
0
0
0
0
VHF RX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
H
H
H
H
0
0
0
0
0
0
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
0
0
0
0
H
0
0
0
0
0
0
0
0
700 TX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
0
0
0
0
H
0
0
0
H
0
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
0
0
0
0
H
0
0
0
0
H
H
0
0
700 RX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
0
0
H
0
H
0
0
0
0
H
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
0
0
0
0
H
0
0
0
0
0
0
0
H
7/800 TX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
H
0
0
0
0
H
0
0
0
0
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
0
0
0
0
H
0
0
0
0
H
H
0
0
800 TX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
0
0
0
0
H
0
0
0
0
H
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
0
0
0
0
H
0
0
0
0
H
H
0
0
800 RX
PIN NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
LOGIC
0
0
H
0
H
0
0
0
H
0
0
0
0
0
PIN NO.
16
17
18
19
21
22
23
24
25
26
27
28
29
30
LOGIC
0
0
0
0
0
H
0
0
H
0
0
0
0
H
Содержание APX 6000
Страница 1: ...APX TWO WAY RADIOS APX 5000 APX 6000 APX 6000XE SRX 2200 Detailed Service Manuals ...
Страница 2: ......
Страница 6: ...iv Document History Notes ...
Страница 20: ...xviii CommercialWarranty Notes ...
Страница 26: ...2 4 Radio Power DC Power Routing VOCON Board Notes ...
Страница 100: ...3 74 Theory of Operation Bluetooth Notes ...
Страница 172: ...5 66 Troubleshooting Charts PA Failure Notes ...
Страница 176: ...6 4 Troubleshooting Waveforms Clocks 6 2 2 4 MHz Clock Trace 1 Trace recorded at R6113 Figure 6 2 4 MHz Clock Waveform ...
Страница 183: ...Troubleshooting Waveforms Audio SSI 6 11 6 3 4 BCLK Trace 1 Trace recorded at R6107 Figure 6 9 Audio SSI BCLK Waveform ...
Страница 185: ...Troubleshooting Waveforms RX SSI 6 13 6 4 2 DA Trace 1 Trace recorded at R1005 Figure 6 11 RX SSI DA Waveform ...
Страница 186: ...6 14 Troubleshooting Waveforms RX SSI 6 4 3 FSYNC Trace 1 Trace recorded at R1004 Figure 6 12 RX SSI FSync Waveform ...
Страница 188: ...6 16 Troubleshooting Waveforms TX SSI 6 5 2 DA Trace 1 Trace recorded at R1017 Figure 6 14 TX SSI DA Waveform ...
Страница 189: ...Troubleshooting Waveforms TX SSI 6 17 6 5 3 FSYNC Trace 1 Trace recorded at R1007 Figure 6 15 TX SSI FSync Waveform ...
Страница 190: ...6 18 Troubleshooting Waveforms SPI 6 6 SPI 6 6 1 CLK Trace 1 Trace recorded at R1003 Figure 6 16 SPI CLK Waveform ...
Страница 191: ...Troubleshooting Waveforms SPI 6 19 6 6 2 MOSI Trace 1 Trace recorded at Pin 31 of J1001 Figure 6 17 MOSI Waveform ...
Страница 192: ...6 20 Troubleshooting Waveforms SPI 6 6 3 MISO Trace 1 Trace recorded at Pin 29 of J1001 Figure 6 18 MISO Waveform ...
Страница 193: ...Troubleshooting Waveforms SPI 6 21 6 6 4 CS Trace 1 Trace recorded at R1018 Figure 6 19 CS Waveform ...
Страница 195: ...Troubleshooting Waveforms I2C BUS 6 23 6 7 2 SCL 5V Trace 1 Trace recorded at R2204 Figure 6 21 I2C Bus SCA 5V Waveform ...
Страница 196: ...6 24 Troubleshooting Waveforms I2C BUS 6 7 3 SDA Trace 1 Trace recorded at R6209 Figure 6 22 I2C Bus SDA Waveform ...
Страница 200: ...6 28 Troubleshooting Waveforms USB 6 10 USB 6 10 1 D Trace 1 Trace recorded at TP F_GCAI_USB Figure 6 26 USB D Waveform ...
Страница 201: ...Troubleshooting Waveforms USB 6 29 6 10 2 D Trace 1 Trace recorded at TP F_GCAI_USB Figure 6 27 USB D Waveform ...
Страница 203: ...Troubleshooting Waveforms UART 6 31 6 11 2 TX Trace 1 Trace recorded at TP F_BOOT_TX Figure 6 29 UART TX Waveform ...
Страница 205: ...Troubleshooting Waveforms SDRAM 6 33 6 12 2 CLKX Trace 1 Trace recorded at TP6308 Figure 6 31 SDRAM CLKX Waveform ...
Страница 250: ...6 78 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Страница 276: ...7 26 Troubleshooting Tables List of Board and IC Signals Notes ...
Страница 300: ...8 24 Schematics Boards Overlays and Parts Lists Transceiver RF Boards VHF Notes ...
Страница 336: ...8 60 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 Notes ...
Страница 378: ...8 102 Schematics Boards Overlays and Parts Lists Transceiver RF Boards 700 800 MHz Notes ...
Страница 432: ...Glossary 10 Glossary Notes ...
Страница 437: ......