Philips CEM2100/00 Service Manual page 407

Pin
Symbol I/O
No.
VDD3
61
I/O
BUS0
62
3I/F
I/O
BUS1
63
3I/F
I/O
BUS2
64
3I/F
I/O
BUS3
65
3I/F
BUCK /
66
3I/F
/CCE
67
3I/F
Test1
68
3I/F
/RST
69
3I/F
Test
70
3I/F
VDD1-1
71
VSS
72
/SRAMSTB
73
3I/F
VDDM1
74
PDo
75
3AI/F
TMAX
76
3AI/F
LPFN
77
3AI/F
LPFo
78
3AI/F
PVREF
79
VCOF
80
3AI/F
*: 3A I/F : 3 V analog circuit input/output pin.
1.5 I/F : 1.5Vdigital input/output pin.
3 I/F : 3 V digital input/output pin.
Note1: The servo output pins (FOO, TRO, FMO, and DMO) become undefined or GND level under the following conditions:
• /RST pin = Low
• Crystal oscillation stopped according to the instructions by the Stop crystal oscillation command
• Power supply for CD is OFF.
• SRAMSTB pin = Low
To prevent the undefined pin states from affecting the servo circuitry or any other mechanical blocks in the system,
appropriate measures should be taken, such as using a driver IC supporting a standby feature to place the system in
standby mode while either of the above conditions is satisfied.
Description
- Power Supply pin for 3.3V Digital circuit
Microprocessor I/F data input/output pin 0
Microprocessor I/F data input/output pin 1
Microprocessor I/F data input/output pin 2
Microprocessor I/F data input/output pin 3
I Microprocessor I/F BUS clock Input pin
I Microprocessor I/F chip enable input pin
I
Test pin("H" input)
I
Reset Input pin
I
Test pin （"L" input ）
- Power Supply pin for 1.5V Digital circuit
- Grounding pin for 1.5V Digital circuit
I
1Mbit SRAM stand by pin（/SRAMSTB="L"）
- Power Supply for 1.5V 1Mbit SRAM circuit
O EFM and PLCK Phase difference signal output
pin.
O
TMAX detection result output pin
I
PLL circuit LPF amplifier inversion input pin
O
PLL circuit LPF amplifier Output pin
- PLL circuit 1.65 V reference voltage pin.
O
VCO filter pin
Default
-
I
I
I
I
I
I
I
I
I
-
-
I
-
O
O
I
O
-
O
7
TC94B14MFG
Remarks
Connect to GND by 0.1uF
CMOS Port
Schmitt input
CMOS Port
Schmitt input
CMOS Port
Schmitt input
CMOS Port
Schmitt input
Schmitt input
Schmitt input
Pull up
Schmitt input
4-state output ( RVDD3,
RVSS3,PVREF, Hiz)
3-state output ( RVDD3,
RVSS3, Hiz)
Connected to VRO. Connect
to GND by 0.1uF and 100uF.
Connect to GND by 0.01uF
2010-01-12