Sony SPP-A2770 Service Manual page 42

SPP-A2770
Pin No. Pin Name
49 VREF
50 PLLGND
51 PLLVCC
52 VRTC
53 XOUT
54 XIN
55 GND
56 RSTN
57 PDN
58 FCSN0
59 GPIO1
60 HCSN1
61 ALE
62 CLE
63 FCSN1
64 to 66
GPIO6 to GPIO8
MODEL
67
SELECT0
MODEL
68
SELECT1
69 (SCLK)
70 (FSYNC)
71 (DL0)
72 (DL1)
73 GPIO15
74 GND
75 VCC
76 DGPIO15
77 DGPIO14
78 DGPIO13
79 DGPIO12
DGPIO11 to
80 to 82
DGPIO9
83 DGPIO8
84 DGPIO7
85 DGPIO6
86 DGPIO5
DGPIO4 to
87 to 91
DGPIO0
92 GND
93 VCC
94 DRDN
95 DWRN
96 7SEG 1A
97 7SEG 1B
42
I/O
O Reference voltage output terminal
— Ground terminal (for internal PLL)
— Power supply terminal (+5V) (for internal PLL)
— Power supply terminal (+5V) (for internal real time clock)
O System clock output terminal (4.096 MHz)
I System clock input terminal (4.096 MHz)
— Ground terminal
I/O Reset signal input from the system controller (IC301) "L": reset
I Power down control signal input from the system controller (IC301) "L": power down
O Chip enable signal output to the flash memory (IC403) "L" active
O Not used (open)
I Chip select signal input from the system controller (IC301) "L" active
O Address latch enable signal output to the flash memory (IC403)
O Command latch enable signal output to the flash memory (IC403)
I/O Not used (open)
I/O Not used (open)
I Model setting terminal (fixed at "L")
I Model setting terminal (fixed at "H")
I Serial data transfer clock signal input from the RF unit (RF271)
I Sync signal input from the RF unit (RF271)
I Receive data input terminal
O Transmit data output terminal
I/O Not used (open)
— Ground terminal
— Power supply terminal (+5V)
O Local handset receiver muting control signal output "H": muting
O Handset TALK gain control signal output
O Local handset receiver volume control signal output terminal Not used (open)
O Local handset receiver volume control signal output terminal Not used (open)
I/O Not used (open)
I/O Not used (pull up)
I/O Not used (fixed at "L")
I/O Not used (open)
I/O Not used (fixed at "L")
Two-way data bus with the flash memory
I/O
Not used (open)
— Ground terminal
— Power supply terminal (+5V)
O Read enable signal output to the flash memory (IC403) "L" active
O Write enable signal output to the flash memory (IC403) "L" active
O 7 segments LED (LED701) drive signal output
O 7 segments LED (LED701) drive signal output
Description