Document
SM5903CF
NIPPON PRECISION CIRCUITS INC.
compression and non compression type anti-shock memory controller
Overview
The SM5903CF is a compression and non compression type anti-shock memory controller LSI for compact disc players. The compression level can be set in 4 levels, and external memory can be selected from 4 options (1M, 4M, 4M× 2, 16M). It operates from a 4.5 to 5.5 V supply voltage range.
Features
- 2-channel processing - Serial data input ⋅ 2s complement, 16-bit/MSB first, rear-packed format ⋅ Wide capture function
pre lim ina
(until triple speed available) - System clock input ⋅ 384fs (16.9344 MHz) - Anti-shock memory controller ⋅ ADPCM compression method ⋅ 4-level compression mode selectable 4-bit compression mode 2.78 s/Mbit 5-bit compression mode 2.22 s/Mbit 6-bit compression mode 1.85 s/Mbit Full-bit non compression mode 0.74 s/Mbit ⋅ 4 external DRAM configurations selectable 16M DRAM (4M × 4 bits ×1,refresh cycle 2048 cycle) 4M DRAM (1M × 4 bits ×1 or ×2) 1M DRAM (256k × 4 bits ×1)
- Microcontroller interface ⋅ Serial command write and state read-out ⋅Data residual quantity detector: 15-bit operation, 16-bit output ⋅ Forced mute
- Extension I/O Microcontroller interface for external control using 5 extension I/O pins - +4.5 to +5.5 V operating voltage range - Schmidt inputs All input pins (including I/O pins) except CLK (system clock) - Reset signal noise elimination Approximately 3.8 µs or longer (65 system
clock pulses) continuous LOW-level reset - 44-pin QFP package (0.8 mm pin pitch)
Ordering Information
SM5903CF 44pin QFP
ry
NIPPON PRECISION CIRCUITS-1
SM5903CF
Package dimensions (Unit: mm)
44-pin QFP
12.80 0.30 10.00 0.30
ina ry
(1.40)
4
0.17 0.05
12.80 0.30
10.00 0.30
0 to 10
0.20 1.50 0.10 (1.40)
0.80
0.15
0.35 0.10
0.20MAX
Pinout (Top View)
lim
A3 A2 A1 A0 A4 A5
44 43 42 41 40 39
0.15 0.05
C0
.7
0.60 0.20
A6
A7
A8
36
38
37
35
A9
VDD2 UC1 UC2 UC3 UC4 UC5 N.C
34
NRAS
33 32 31 30 29 28 27 26 25 24 23
1 2 3 4 5 6 7 8 9
NWE D1 D0 D3 D2 NCAS A10/ NCAS2 YMCLK YMDATA YMLD YDMUTE
SM5 9 0 3 C F
pre
NTEST CLK VSS
10 11
YSRDATA
12
13
14
15
16
17
18
19
20
21
YBLKCK
NRESET
ZSENSE
YFCLK
ZSRDATA
ZLRCK
YLRCK
YFLAG
VDD1
ZSCK
YSCK
22
NIPPON PRECISION CIRCUITS-2
SM5903CF
Pin description
Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Pine name VDD2 UC1 UC2 UC3 UC4 UC5 N.C NTEST CLK VSS YSRDATA YLRCK YSCK ZSCK ZLRCK ZSRDATA YFLAG YFCLK YBLKCK NRESET ZSENSE VDD1 I/O Ip/O Ip/O Ip/O Ip/O Ip/O Ip I I I I O O O I I I I O I I I Function H VDD supply pin Microcontroller interface extension I/O 1 Microcontroller interface extension I/O 2 Setting L
ina ry
Microcontroller interface extension I/O 4 Microcontroller interface extension I/O 5 Test pin Ground 16.9344 MHz clock input Audio serial input data Audio serial input LR clock Audio serial input bit clock Left channel Audio serial output bit clock Audio serial output data Audio serial output LR clock Left channel Signal processor IC RAM overflow flag Crystal-controlled frame clock Subcode block clock signal System reset pin Microcontroller interface status output VDD supply pin Forced mute pin Mute Microcontroller interface latch clock Microcontroller interface serial data DRAM address 10 Microcontroller interface shift clock DRAM2 CAS control (with 2 DRAMs) DRAM CAS control DRAM data input/output 2 DRAM data input/output 3 DRAM data input/output 0 DRAM data input/output 1 DRAM WE control DRAM RAS control DRAM address 9 DRAM address 8 DRAM address 7 DRAM address 6 DRAM address 5 DRAM address 4 DRAM address 0 DRAM address 1 DRAM address 2 DRAM address 3
Microcontroller interface extension I/O 3
Test
Right channel
Right channel Overflow
YDMUTE YMLD YMDATA YMCLK A10
pre
D0 D1 I/O I/O O O O O O O O O O O O O NWE A9 A8 A7 A6 A5 A4 A0 A1 A2 A3 NRAS Ip : Input pin with pull-up resistor
lim
I O (NCAS2) NCAS D2 D3 O O I/O I/O
Reset
Ip/O : Input/Output pin (With pull-up resistor when a input mode)
NIPPON PRECISION CIRCUITS-3
SM5903CF
Absolute maximum ratings
(VSS = 0V, VDD1, VDD2 pin voltage = VDD) Parameter Supply voltage Input voltage Storage temperature Power dissipation Soldering temperature Soldering time Symbol VDD VI TSTG PD TSLD Rating - 0.3 to 7.0 VSS - 0.3 to VDD + 0.3 - 55 to 125 350 255 10 Unit V V ˚C mW ˚C sec
tSLD
Note. Refer to pin summary on the next page. Values also apply for supply inrush and switch-off.
Electrical characteristics
Recommended operating conditions
Parameter Supply voltage Operating temperature Symbol VDD TOPR
(VSS = 0V, VDD1, VDD2 pin voltage = VDD) Rating Unit V ˚C 4.5 to 5.5
DC characteristics
Standard voltage:(VDD1 = VDD2 = 4.5 to 5.5 V, VSS = 0 V, Ta = - 40 to 85 ˚C)
Parameter Pin Symbol IDD Condition Min Rating Typ 13.5 5.0 0.7VDD 0.3VDD 1.0 0.7VDD 0.3VDD 0.6VDD 0.2VDD IOH = - 0.5 mA IOL = 0.5 mA IOH = - 0.5 mA IOL = 0.5 mA VIN = VDD VIN = 0V VIN = 0V VIN = VD.