RS8953 Conexant Systems, Inc., RS8953 Datasheet - Page 84
RS8953
Manufacturer Part Number
RS8953
Description
High-bit-rate Digital Subscriber Line (hdsl) Channel unit
Manufacturer
Conexant Systems, Inc.
Datasheet
1.RS8953.pdf
(173 pages)
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4.0 Registers
4.3 Transmit Payload Mapper
4-16
0x0F—Transmit Payload Map (TMAP_6)
0x10—Transmit Payload Map (TMAP_7)
0x11—Transmit Payload Map (TMAP_8)
0x12—Transmit Payload Map (TMAP_9)
7
7
7
7
BYTE24 TMAP[1:0]
BYTE28 TMAP[1:0]
BYTE32 TMAP[1:0]
BYTE36 TMAP[1:0]
Transmit Payload Map code selects one of four data sources for HDSL payload bytes. A
maximum of 18 map codes, corresponding to payload byte1 through byte36, are programmed
for each HDSL channel. If the payload block length is less than 36 bytes, TMAP codes of the
upper bytes are unused.
6
6
6
6
Notes: 1. When DBANK_3 and TAUX_EN [TCMD_2; addr 0x07] are selected, TLOADn output
TMAP[1:0]
5
5
5
5
BYTE23 TMAP[1:0]
BYTE27 TMAP[1:0]
BYTE31 TMAP[1:0]
BYTE35 TMAP[1:0]
00
01
10
11
2. When DBANK_3, TAUX_EN and EXT_ZBIT [TCMD_2; addr 0x07] are selected,
is active and TAUXn supplies data during selected payload byte.
TLOADn output is active and TAUXn supplies data during the last 40 Z-bits.
4
4
4
4
Conexant
3
3
3
3
BYTE22 TMAP[1:0]
BYTE26 TMAP[1:0]
BYTE30 TMAP[1:0]
BYTE34 TMAP[1:0]
Transmit HDSL Payload Source
PCM data from TFIFO
DBANK_3
DBANK_1
DBANK_2
2
2
2
2
(1, 2)
RS8953B/8953SPB
1
1
1
1
BYTE21 TMAP[1:0]
BYTE25 TMAP[1:0]
BYTE29 TMAP[1:0]
BYTE33 TMAP[1:0]
HDSL Channel Unit
N8953BDSB
0
0
0
0
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