HD49235FS Datasheet, PDF (4/41 Pages) Hitachi Semiconductor – Digital Signal Processor for CD

HD49235FS
Pin Description (cont)
Pin
No. Symbol Name
I/O*
21 MPX Multiplex
O
22 C2F
23 QMX
C2 flag
O
Quad multiplex O
24 DMX
25 UCK
Double
O
multiplex
µ-com clock O
26 TC1
27 MCK
Test C1 flag O
Master clock O
28 NC
29 XCO
30 XCI
31 V_SS (D)
32 NC
33 NC
34 NC
35 NC
36 NC
37 NC
38 NC
39 NC
40 NC
41 NC
42 NC
43 NC
44 NC
No connection —
X’tal clock
XO
output
X’tal clock
XI
input
V_SS (digital)
—
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
No connection —
Connection Function
DAC or ROM
decoder
Left/right channel switching
signal output (44.1 kHz at
normal speed, synchronized
with DAS)
ROM decoder C2 error flag output
4 × MPX clock signal
(176.4 kHz at normal speed,
synchronized with DAS)
2 × MPX clock signal
(88.2 kHz at normal speed,
synchronized with DAS)
Microprocessor Clock output for
microprocessor
(8.5 MHz or 17 MHz)
C1 error flag monitor pin
Master clock output
(33.8688 MHz)
Open or VDD Not connected
Crystal
oscillator
Crystal oscillator output
Crystal
oscillator
Crystal oscillator input
Digital ground
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Open
Not connected
Polarity
H
L
Error
Error
Rev.2, Aug. 1995, page 4 of 41