Sony STR-DN840 Service Manual page 58

STR-DN840
IC4000 MFI341S2162 (DIGITAL BOARD (8/8))
NC 1
MODE1 2
NC 3
RESET 4
VCC 5
NC 6
NC 7
Internal address bus
8
NC
NC 9
NC 10
Power-on
reset circuit
On-chip
oscillator
IC4101 TPS2553DBVR (DIGITAL BOARD (8/8))
IN 1
CHARGE
GND 2
PUMP
EN 3
DRIVER
UNDERVOLTAGE
LOCKOUT
THERMAL
SENSE
58
I/O port
HB/300H CPU
RNG
System control
WDT
FMU
Security logic
Voltage monitoring circuit
ROM (112 kbytes)
RAM (4 kbytes)
EEPROM (16 kbytes + 2 kbytes)
Interval timer 1
Interval timer 2
Register
Modular multiplication
(612 bytes)
coprocessor
REVERSE VOLTAGE
COMPARATOR
–
+
CURRENT
SENSE
4-ms
DEGLITCH
CURRENT
LIMIT
8-ms
DEGLITCH
20 NC
19 NC
18 NC
17 NC
Internal data bus
16 NC
15 NC
14 MODE0
13 12C_SDA
12 12C_SCL
11 VSS
6 OUT
5 ILLM
4 FAULT