4.0 Registers
RS8953B/8953SPB
4.3 Transmit Payload Mapper
HDSL Channel Unit
0x0F—Transmit Payload Map (TMAP_6)
7
6
5
4
3
2
1
0
BYTE24 TMAP[1:0]
BYTE23 TMAP[1:0]
BYTE22 TMAP[1:0]
BYTE21 TMAP[1:0]
0x10—Transmit Payload Map (TMAP_7)
7
6
5
4
3
2
1
0
BYTE28 TMAP[1:0]
BYTE27 TMAP[1:0]
BYTE26 TMAP[1:0]
BYTE25 TMAP[1:0]
0x11—Transmit Payload Map (TMAP_8)
7
6
5
4
3
2
1
0
BYTE32 TMAP[1:0]
BYTE31 TMAP[1:0]
BYTE30 TMAP[1:0]
BYTE29 TMAP[1:0]
0x12—Transmit Payload Map (TMAP_9)
7
6
5
4
3
2
1
0
BYTE36 TMAP[1:0]
BYTE35 TMAP[1:0]
BYTE34 TMAP[1:0]
BYTE33 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.
TMAP[1:0]
Transmit HDSL Payload Source
PCM data from TFIFO
DBANK_1
00
01
10
11
DBANK_2
DBANK_3(1, 2)
Notes: 1. When DBANK_3 and TAUX_EN [TCMD_2; addr 0x07] are selected, TLOADn output
is active and TAUXn supplies data during selected payload byte.
2. When DBANK_3, TAUX_EN and EXT_ZBIT [TCMD_2; addr 0x07] are selected,
TLOADn output is active and TAUXn supplies data during the last 40 Z-bits.
4-16
Conexant
N8953BDSB
CONEXANT [ CONEXANT SYSTEMS, INC ]
