Hitachi CL32W30TAN Wartungshandbuch Seite 36

Test Point ID Net Name
DELAY
A181 3v3-COFDM
A170 GNDD
TP868 IC724-0
TP869 IC724-1
TP870 IC724-2
TP871 SYNC724
TP852 XCTR_IN
TP853 DTACK_POL
TP855 ADCVREFQ
TP856 ADCVREFQN
TP857 ADCVDDQ
TP858 ADCVSSQ
TP859 QVIN
TP861 ADCVREF I
TP862 ADCVREF IN
TP863 ADCVDD I
TP864 ADCVSS I
TP865 I VIN
A184 /COE
A191 ERR724
A197 FSTART
A199 BCLK
A185 DV724
A198 FSTARTOUT
A213 CO-7
A212 CO-6
A214 CO-5
A215 CO-4
A200 CO-3
A201 CO-2
A202 CO-1
A209 CO-0
A143 V-
A128 C2-
A120 C1-
A119 C2+
A116 C1+
A118 V+
A221 GNDD
A121 TX01
A129 RX01
A216 RS232-RX
A133 RS232-TX
A204 RS232-RTS
A144 RS232-CTS
A145 CTS01
A161 RTS01
TP872 MODEM-RTS
TP873 MODEM-DSR
TP874 MODEM-CTS
TP875 MODEM-DTR
A021 SDA-NVM2
A013 SCL-NVM2
A034 SDA-NVM1
A024 SCL-NVM1
A052 NVM-WP
A229 GNDD
A096 SDA
A104 SCL
A224 GNDD
A165 /RVLC
A188 TF
A196 TXIN
A211 RING
A220 TIP
Function
Filtered 3V3 supply to FE ICs
Supply ground
External output control pin 0
External output control pin 1
External output control pin 2
Synch status output
External input control pin
Unused data acknowledge
Unused ADC reference voltage
Unused ADC reference voltage
Unused analogue supply
Unused analogue ground
Unused Q channel data input
Unused ADC reference voltage
Unused ADC reference voltage
Unused analogue supply
Unused analogue ground
Unused Q channel data input
Unused channel output enable
Transoport stream packet error from FEC
Transport stream packet start from FEC
Transport stream bit clock
Transport stream data valid
Transport stream packet start
Transport stream data out bit 7
Transport stream data out bit 6
Transport stream data out bit 5
Transport stream data out bit 4
Transport stream data out bit 3
Transport stream data out bit 2
Transport stream data out bit 1
Transport stream data out bit 0
-10V for RS232
0 to -10V square wave for generating -10V
0 to +5V square wave for generating +10V from 5V
0 to +10V square wave for generating -10V from +10V
+5V to +10V square wave for generating +10V from +5V
+10V for RS232
ground for RS232 connector
10V RS232 TX to 9-way D
10V RS232 RX from 9-way D
5V RS232 RX to Mips
5V RS232 TX from Mips
5V RS232 RTS from Mips
5V RS232 CTS to Mips
10V RS232 CTS from 9-way D
10V RS232 RTS to 9-way D
5V RS232 RTS from Mips to Modem (not used)
5V RS232 DSR from Mips to Modem (not used)
5V RS232 CTS to Mips from Modem (not used)
5V RS232 CTS to Mips from Modem (not used)
I2C bus for NVM2 (data)
I2C bus for NVM2 (clock)
I2C bus for NVM2 (data)
I2C bus for NVM2 (clock)
Write protect line for NVM chips, active high in protect mode
Ground
'Network' I2C bus (data)
'Network' I2C bus (clock)
ground for modem
mirror (reduced) of voltage across the phone line
ringing loop sense input
AC coupled telephone input signal
DC input from telephone
input from telephone
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