35
Test Point ID
Net Name
Function
DELAY
A181
3v3-COFDM
Filtered 3V3 supply to FE ICs
A170
GNDD
Supply ground
TP868
IC724-0
External output control pin 0
TP869
IC724-1
External output control pin 1
TP870
IC724-2
External output control pin 2
TP871
SYNC724
Synch status output
TP852
XCTR_IN
External input control pin
TP853
DTACK_POL
Unused data acknowledge
TP855
ADCVREFQ
Unused ADC reference voltage
TP856
ADCVREFQN
Unused ADC reference voltage
TP857
ADCVDDQ
Unused analogue supply
TP858
ADCVSSQ
Unused analogue ground
TP859
QVIN
Unused Q channel data input
TP861
ADCVREF I
Unused ADC reference voltage
TP862
ADCVREF IN
Unused ADC reference voltage
TP863
ADCVDD I
Unused analogue supply
TP864
ADCVSS I
Unused analogue ground
TP865
I VIN
Unused Q channel data input
A184
/COE
Unused channel output enable
A191
ERR724
Transoport stream packet error from FEC
A197
FSTART
Transport stream packet start from FEC
A199
BCLK
Transport stream bit clock
A185
DV724
Transport stream data valid
A198
FSTARTOUT
Transport stream packet start
A213
CO-7
Transport stream data out bit 7
A212
CO-6
Transport stream data out bit 6
A214
CO-5
Transport stream data out bit 5
A215
CO-4
Transport stream data out bit 4
A200
CO-3
Transport stream data out bit 3
A201
CO-2
Transport stream data out bit 2
A202
CO-1
Transport stream data out bit 1
A209
CO-0
Transport stream data out bit 0
A143
V-
-10V for RS232
A128
C2-
0 to -10V square wave for generating -10V
A120
C1-
0 to +5V square wave for gene10V from 5V
A119
C2+
0 to +10V square wave for generating -10V from +10V
A116
C1+
+5V to +10V square wave for gene10V from +5V
A118
V+
+10V for RS232
A221
GNDD
ground for RS232 connector
A121
TX01
10V RS232 TX to 9-way D
A129
RX01
10V RS232 RX from 9-way D
A216
RS232-RX
5V RS232 RX to Mips
A133
RS232-TX
5V RS232 TX from Mips
A204
RS232-RTS
5V RS232 RTS from Mips
A144
RS232-CTS
5V RS232 CTS to Mips
A145
CTS01
10V RS232 CTS from 9-way D
A161
RTS01
10V RS232 RTS to 9-way D
TP872
MODEM-RTS
5V RS232 RTS from Mips to Modem (not used)
TP873
MODEM-DSR
5V RS232 DSR from Mips to Modem (not used)
TP874
MODEM-CTS
5V RS232 CTS to Mips from Modem (not used)
TP875
MODEM-DTR
5V RS232 CTS to Mips from Modem (not used)
A021
SDA-NVM2
I2C bus for NVM2 (data)
A013
SCL-NVM2
I2C bus for NVM2 (clock)
A034
SDA-NVM1
I2C bus for NVM2 (data)
A024
SCL-NVM1
I2C bus for NVM2 (clock)
A052
NVM-WP
Write protect line for NVM chips, active high in protect mode
A229
GNDD
Ground
A096
SDA
‘Network’ I2C bus (data)
A104
SCL
‘Network’ I2C bus (clock)
A224
GNDD
ground for modem
A165
/RVLC
mirror (reduced) of voltage across the phone line
A188
TF
ringing loop sense input
A196
TXIN
AC coupled telephone input signal
A211
RING
DC input from telephone
A220
TIP
input from telephone
Содержание C28W40TN
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