KX-HTS32RU, KX-HTS824RU - Panasonic PBX Service Manual (repair manual). Page 14

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In this section, we will discribe general function of CPU that is responsible for PBX function, monitoring and control each unit.

Processor

MIPS 34Kc/720MHz

Internal Memory

Instruction Cache : 32Kbytes
Data Cache : 32Kbytes

Dual Thread Function

VPE0 : Application / VPE1 : DSP Fuction

Memory I/F

DDR2 : 128MBytes (x16bit x 1chip)
NAND : 512MBytes (x8bit w/ ECC(4bit/512Bytes)

Boot Device

CPU Internal Boot ROM

L2SW Function

Gigabit GMAC/PHY
L2SW Mac Entries : up to 2048
Traffic Management function

802.11 Wireless LAN

802.11b/g/n
1x1/2x2 MIMO mode support

USB

USB2.0

Power

Each voltage described as below is required for CPU operation. In this system, these voltage is 
generated by DCDC converter device and supplyed to CPU.

 3.3V   Digital circuit I/O voltage
 2.5V   Internal circuit voltage
 1.8V   DDR2 circuit voltage
 1.05V  CPU core voltage

Clock

The frequency of system clock of CPU is 36MHz, this clock is generated by Wireless LAN control LSI 
and is disributed to CPU via differential signal. 
And the frequency of CPU internal operating clock is 720MHz, this clock is generated by internal PLL 
circuit from 36MHz input clock.

Reset

The basic reset signal called POR (Power On Reset) is generated by voltage monitoring IC on power 
circuit and is connected to the CPU por terminal.

EJTAG_TRST_U
EJTAG_TDI_U
EJTAG_TDO_U
EJTAG_TMS_U
EJTAG_TCK_U

C2000

C2001

R2006

nHRST

R2007

R2010

R2012

R2011

R2013

R2014

DG

DG

R2003

nPOR

FSYSOUT_P
FSYSOUT_N

CL2002

+3.3V_CPU

D2000

C2003

JTAG_TRST

JTAG_TDI

JTAG_TDO

JTAG_TMS

JTAG_TCK

JTAG_RST

+2.5V

CL2007

DG

+3.3V_CPU

BTMODE_OE

IC101

G22

G22

A15

A15

E23

E23

E22

E22

M19

M19

L19

L19

D23

D23

A17

A17

A16

A16

B17

B17

B16

B16

A14

A14

B14

B14

E18

E18

E19

E19

L2

L2

F23

F23

C22

C22

C23

C23

J1

J1

J2

J2

IC3001

1

NC

2

A

4

Y

5

VCC

3

GND

EJTAG DEBUG

For Debug