參數(shù)資料
型號(hào)： PT7D6555
英文描述： -40V Single P-Channel HEXFET Power MOSFET in a TSOP-6 (Micro 6) package
中文描述： 擴(kuò)展的PCM接口控制器？
文件頁(yè)數(shù)： 27/56頁(yè)
文件大?。?/td> 489K
代理商： PT7D6555
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Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
27
PT0105(08/02)
Ver:0
Bit Number per PCM-Frame (PBNR)
value after reset: 11111111B
Address: 22H(1/1H)
Read/Write
PCM-Offset Downstream Register (POFD)
value after reset: 000000B
Address: 24H(1/2H)
Read/Write
7 0
BNF7
BNF6
BNF5
BNF4
BNF3
BNF2
BNF1
BNF0
BNF7..0
Bit Number per PCM Frame.
PCM-mode 0: BNF7..0 = number of bits
–
1
PCM-mode 1: BNF7..0 = (number of bits
–
2) / 2
PCM-mode 2: BNF7..0 = (number of bits
–
4) / 4
The value programmed in PBNR is also used to check the PFS period.
7 0
OFD9
OFD8
OFD7
OFD6
OFD5
OFD4
OFD3
OFD2
OFD9..2
Offset Downstream bit 9…2.
These bits together with PCSR: OFD1..0 determine the offset of the PCM frame in downstream direction. The
following formulas apply for calculating the required register value. BND is the bit number in downstream direction
marked by the rising internal PFS edge. BPF denotes the actual number of bits constituting a frame.
PCM mode 0:
OFD9..2 = mod
(BND
–
17 + BPF)
PCSR:OFD1..0 = 0
PCM mode 1:
OFD9..1 = mod
BPF
(BND
–
33 + BPF)
PCSR: PFD0 = 0
PCM mode 2:
OFD9..0 = mod
BPF
(BND
–
65 + BPF)
PCM-Offset Upstream Register (POFU)
Value after reset: 00000000B
Address: 26H(1/3H)
Read/Write
7 0
OFU9
OFU8
OFU7
OFU6
OFU5
OFU4
OFU3
OFU2
OFU9..2
Offset Upstream bit 9…2.
These bits together with PCSR: OFU1..0 determine the offset of the PCM frame in upstream direction. The following
formulas apply for calculating the required register value. BNU is the bit number in upstream direction marked by the
rising internal PFS-edge.
PCM mode 0:
OFU9..2 = modBPF (BNU + 23)
PCSR:OFU1..0 = 00
PCM mode 1:
OFU9..1 = modBPF (BNU + 47)
PCSR:OFU0 = 0
PCM mode 2:
OFU9..0 = modBPF (BNU + 95)
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