BL-C1CE, BL-C1E - Panasonic Video Monitoring Service Manual (repair manual). Page 8

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BL-C1CE / BL-C1E
4 Technical Descriptions
4.1.
Main Board
4.1.1.
CPU Block
CPU (IC101)
Operating Power Supply: 3.3V (for I/O) 1.8V (for Core) 1.8V (for Inside PLL) 2.8V (Camera I/O)
Package: 144 pin QFD
Internal Component: 32bit RISC ARM720T, Hardware JPEG Encoder, Memory Controller, 10/100Base Ethernet MAC, I2C I/F,
Serial I/F, SRAM (48KB) and etc are built-in.
Outline of Operation: All system Control and image data from the camera is changed to JPEG data. Then, it is changed to
packet and sent out from Ethernet I/F.
32.786 KHz is entered as External Clock and increase at Internal PLL. Then, it operates at 48.955 MHz. Flash Memory (IC102)
and SDRAM (IC103) are accessed by CPU Bus.
CMOS sensor (IC701) on the Board are accessed by I2C I/F. Ethernet PHY (IC201) is accessed by MII (Media Independent
Interface) I/F.
FLASH MEMORY (IC102)
Operating Power Supply: +3.3V
Package: 48 pin Ball CSP
Capacity: 16Mbit
Access Time: 70ns
Outline of Operation: Stores programs for CPU operation, MAC address and customer setup data. Version up is available from
Ethernet I/F.
SDRAM (IC103)
Operating Power Supply: +3.3V
Package: 54 pin TSOP
Capacity: 64Mbit
Outline of Operation: Stores the memory for CPU work and temporary saved images.
RESET IC (IC105)
Reset voltage: 2.9V 
Package: 4 pin SOP
Outline of Operation: When 3.3V power starts up, it emits about 150ms reset pulse after detecting 2.9V.
Clear Setting Button (SW802)
Outline of Operation: It is possible to bring back the setting value of a Network Camera to a factory-shipments state, when you
push.
GPI0
• Clear Setting SW
• I2C
• LED
• Short Term Power Cut Detection
Port No.
IC101 PIN No.
Usage
Description
GPIOA0
79
GPIOA1
80
GPIOA2
81
RTC-CLK
RTC Control
GPIOA3
82
RTC-DATA
RTC Control
GPIOA4
83
RTC-CE
RTC Control
GPIOA5
84
RTC-WR
RTC Control
GPIOA6
85
I2C(SCL)
I2C I/F(Clock)
GPIOA7
86
I2C(SDA)
I2C I/F(Data)
GPIOB0
89
GPIOB1
90
GPIOB2
91
GPIOB3
92
CLEAR SETTING Switch
SW802
GPIOB4
94
Short Term Power Cut Detection
Interruption
GPIOB5
95
GPIOB6
96
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