Extension Port Ic - Kenwood TS-990S Service Manual

TS-990S
Pin No. Name I/O
89 SDTO0 O
90 VDDINT -
91 GND -
92 GND -
93 VDDEXT -
94 NC -
95 GND -
96 VDDINT -
97 PDN O
SCP_
98 I
RYBY
99 VDDINT -
100 GND -
101 VDDINT -
102 GND -
103 VDDINT -
104 GND -
105 VDDINT -
106 GND -
107 VDDINT -
108 VDDINT -
109 GND -
110 VDDINT -
111 GND -
112 VDDINT -
113 GND -
114 VDDINT -
115 GND -
116 VDDEXT -
117 GND -
118 VDDINT -
119 GND -
120 VDDINT -
121 SCDRES I
122 SCDSCS I
123 GND -
124 VDDINT -
125 SCDCLK I
126 SCDSIN O
SCD-
127 I
SOUT
128 GND -
129 VDDINT -
130 VDDEXT -
131 AVDD -
64
SEMICONDUCTOR DATA
Function
No connection
Core power (1.2V)
GND
GND
External power (3.3V)
No connection
GND
Core power (1.2V)
Power down for ADC/DAC
Rady/Busy signal from fl ash memory
Core power (1.2V)
GND
Core power (1.2V)
GND
Core power (1.2V)
GND
Core power (1.2V)
GND
Core power (1.2V)
Core power (1.2V)
GND
Core power (1.2V)
GND
Core power (1.2V)
GND
Core power (1.2V)
GND
External power (3.3V)
GND
Core power (1.2V)
GND
Core power (1.2V)
Reset
Serial chip select input from scope MCU
GND
Core power (1.2V)
Serial clock input from scope MCU
Serial data output to scope MCU
Serial data input from scope MCU
GND
Core power (1.2V)
External power (3.3V)
PLL power (1.2V)
Pin No. Name I/O
132 AVSS - PLL GND
133 GND - GND
134 NC - No connection
SCP_
135 O For JTAG (no use)
EMU
SCP_
136 O For JTAG (no use)
TDO
137 SCP_TDI I For JTAG (no use)
SCP_
138 I For JTAG (no use)
TRST
SCP_
139 I For JTAG (no use)
TCK
SCP_
140 I For JTAG (no use)
TMS
141 GND - GND
142 CLKIN I X'tal input
143 XTAL O X'tal output
144 VDDEXT - External power (3.3V)
Extension Port IC: TC74VHC373FT
(Control unit IC31)
Pin No. Name I/O
1 OE I Output enable
2 SRTS O RTS signal output to scope MCU
3 D0 I Data bit 0
4 D1 I Data bit 1
5 DRTS O RTS signal output to DSP MCU
6 ARTS O RTS signal output to application MCU
7 D2 I Data bit 2
8 D3 I Data bit 3
Switch signal for USB device power
9 USBSW O
H: Active
10 GND - GND
11 LE I Latch enable
32kHz clock out control
12 RT32S O
H: Active
13 D4 I Data bit 4
14 D5 I Data bit 5
15 PRTS O RTS signal output to panel MCU
16 CRTS O RS-232C request to send
17 D6 I Data bit 6
18 D7 I Data bit 7
19 VRTS O RTS signal output to USB-serial bridge
20 VCC - 3.3V
Function
Function