HD49235FS Datasheet, PDF (5/41 Pages) Hitachi Semiconductor – Digital Signal Processor for CD

HD49235FS
Pin Description (cont)
Pin
No. Symbol Name
I/O*
45 NC
No connection —
46 NC
No connection —
47 NC
No connection —
48 NC
No connection —
49 NC
No connection —
50 NC
No connection —
51 NC
No connection —
52 V_DD (D)
53 NC
V_DD (digital)
—
No connection —
54 PLLCK PLL clock
O
55 MRST Master reset IU
56 TEST1 TEST 1
IU
57 PDOUT2 Phase detect TO
out 2
58 V_SS (A)
59 AC
V_SS (analog) —
Amp
A
compensation
60 AMPO Amp output AO
61 AMPM
62 AMPP
Amp minus AI
input
Amp plus input AI
63 V_DD (A) V_DD (analog) —
64 PDOUT1 Phase detect TO
out 1
65 QDSEL Q-data clock IU
select
66 DSLCO DSL control O
output
67 DSLCI DSL control AI
input
68 EFMI EFM signal AI
input
69 DEFCT Defect
I
70 TEST2 TEST 2
IU
Connection
Open
Open
Open
Open
Open
Open
Open
Open or V_DD
Open or V_DD
Open or V_DD
External RC
circuit
External RC
circuit
External RC
circuit
External RC
circuit
External RC
circuit
External RC
circuit
External RC
circuit
External RC
circuit
Servo IC
Open or V_DD
Polarity
Function
H
L
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
Digital power supply
Not connected
PLL clock output monitor
Master reset of chip
Reset
Test pin
PLL auto-adjust phase
detector output
Analog ground
Amplifier phase compensation
pin
PLL amplifier output
PLL amplifier inverting input
PLL amplifier non-inverting
input
Analog power supply
PLL EFM phase detector
output
Q data readout mode
switching signal input
EFM comparator slice level
control output
EFM comparator slice level
control input
EFM signal input
Internal External
sync sync
Defect detection signal input Defect
Test pin
Rev.2, Aug. 1995, page 5 of 41