USBB17AP77016-XXX-B11 NEC Electronics, USBB17AP77016-XXX-B11 Datasheet - Page 26

• Manufacturer Part Number: USBB17AP77016-XXX-B11
• Description: DSP middleware(WMA (Windows Media Audio)decoder)
• Manufacturer: NEC Electronics

2.5
secure area for buffers, is described here.
respective sizes of these areas are shown in Table 2-4 Memory Size Required for Each Bit Rate.
26
The configuration of the data memory used by the µ SAP77016-B11, including details of the static area and how to
With the µ SAP77016-B11, the scratch memory area and static memory area must be defined separately. The
192,000
192,000
160,000
160,000
128,000
128,000
Bit Rate
96,000
80,000
64,000
64,000
48,000
48,000
44,000
40,000
36,000
32,000
48,000
32,000
32,000
32,000
32,000
22,000
22,000
22,000
20,000
20,000
20,000
20,000
20,000
20,000
20,000
[bps]
Memory Configuration
Frequency [Hz]
Sampling
48,000
44,100
48,000
44,100
48,000
44,100
44,100
44,100
44,100
32,000
44,100
32,000
32,000
32,000
32,000
44,100
44,100
44,100
32,000
32,000
22,050
32,000
22,050
22,050
32,000
32,000
22,050
22,050
22,050
22,050
16,000
Table 2-4. Memory Size Required for Each Bit Rate (1/2)
Number of
Channels
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
1
2
2
2
2
1
1
2
2
1
1
2
CHAPTER 2 LIBRARY SPECIFICATIONS
WMA CODEC
Version
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
2, 7, 8
User’s Manual U15683EJ1V0UM
7, 8
2, 8
2, 7
2, 7
2, 7
2, 7
8
2
2
2
8
8
2
2
8
8
8
8
static_x1
741
741
741
741
741
741
741
741
741
741
741
741
972
972
972
972
741
741
972
972
741
972
972
972
972
972
972
972
972
972
972
X Memory Size [Words]
static_x2
8,192
4,096
4,096
4,096
2,048
2,048
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
scratch
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
1,572
static_y1
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
8,192
Y Memory Size [Words]
static_y2
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
4,096
2,048
2,048
4,096
2,048
2,048
4,096
2,048
2,048
2,048
2,048
2,048
2,048
1,024
1,024
1,024
scratch
299
299
299
299
299
299
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0