CX28398 Conexant Systems, CX28398 Datasheet - Page 237

• Manufacturer Part Number: CX28398
• Description: (CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers
• Manufacturer: Conexant Systems

CX28394/28395/28398
Quad/x16/Octal—T1/E1/J1 Framers
The Receive Signaling Buffer (RSIGn) contains all ABCD signaling inputs from all channels, regardless of
whether signaling is active [SIG_STK; addr 180–19F]. RSIGn is not updated during signaling freeze
conditions, or when the receive framer is configured in a non-signaling mode. Normal signaling buffer
operation transfers ABCD input to ABCD output coincident with the D-bit update (in T1 mode) or coincident
with receipt of respective channel's ABCD signaling during TS16 (in E1 mode). When DEBOUNCE is active,
output signaling for active channels is updated coincident with the sampling of each input signaling bit and may
cause the buffered output value to transition in the middle of the received multiframe.
RSIGn[7]
RSIGn[6]
RSIGn[5]
RSIGn[4]
RSIGn[3].
RSIGn[2].
RSIGn[1].
RSIGn[0].
RPCM[1]
RPCM[2]
RPCM[3]
RPCM[4]
RPCM[5]
RPCM[6]
RPCM[7]
RPCM[8]
100054E
1A0–1BF—Receive Signaling Buffer (RSIGn; n = 0 to 31)
1C0–1DF—Receive PCM Slip Buffer (RSLIP_LOn; n = 0 to 31)
RSIGn[7]
RPCM[1]
7
7
Output Signaling A Bit
Output Signaling B Bit
Output Signaling C Bit
Output Signaling D Bit
Input Signaling A Bit
Input Signaling B Bit
Input Signaling C Bit
Input Signaling D Bit
First bit
Second bit
Third bit
Fourth bit
Fifth bit
Sixth bit
Seventh bit
Eighth bit received from receiver
RSIGn[6]
RPCM[2]
6
6
RSIGn[5]
RPCM[3]
5
5
RSIG0 (E1)
MAS.1
MAS.2
MAS.3
MAS.4
RSIGn[4]
RPCM[4]
4
4
Conexant
RSIGn[3]
RPCM[5]
RSIG16 (E1)
X.1
MYEL
X.3
X.4
3
3
RSIGn[2]
RPCM[6]
2
2
RSIGn[1]
RPCM[7]
3.16 System Bus Registers
1
1
3.0 Registers
RSIGn[0]
RPCM[8]
0
0
3-115