CX28394/28395/28398
3.0 Registers
Quad/x16/Octal—T1/E1/J1 Framers
3.2 Global Control and Status Registers
SBIMODE[1:0]
The processor writes FCR at power-up to configure the system bus interface mode. Each
group of four framers can be configured as separate system bus interfaces or as an internally
multiplexed group. The group consisting of framers 1 through 4 (9 through 12) can be
configured to share a common system bus interface, SBI Bus A. The group consisting of
framers 5 through 8 (13 through 16) can also be configured to share a common system bus
interface, SBI Bus B.
SBIMODE[1]:
SBIMODE[0]:
0 = Separate system bus interface mode for framer group 5–8 (13–16).
1 = Common, multiplexed system bus interface mode.
0 = Separate system bus interface mode for framer group 1–4 (9–12).
1 = Common, multiplexed system bus interface mode.
081—Master Interrupt Request (MIR)
CX28394
7
6
5
4
3
2
1
0
—
—
—
—
MIR[3]
MIR[2]
MIR[1]
MIR[0]
CX28398 and CX28395
7
6
5
4
3
2
1
0
MIR[7]
MIR[6]
MIR[5]
MIR[4]
MIR[3]
MIR[2]
MIR[1]
MIR[0]
MIR[7:0]
An active MIR bit indicates which framer has active interrupts. An MIR bit is latched active
(high) whenever any bit in the Interrupt Request Register (IRR[7:0]; addr 003–0B) is set to
report an interrupt event.
MIR0:
MIR1:
MIR2:
MIR3:
MIR4:
MIR5:
MIR6:
MIR7:
0 = no interrupt event in framer 0
1 = active interrupt event in framer 0
0 = no interrupt event in framer 1
1 = active interrupt event in framer 1
0 = no interrupt event in framer 2
1 = active interrupt event in framer 2
0 = no interrupt event in framer 3
1 = active interrupt event in framer 3
0 = no interrupt event in framer 4
1 = active interrupt event in framer 4
0 = no interrupt event in framer 5
1 = active interrupt event in framer 5
0 = no interrupt event in framer 6
1 = active interrupt event in framer 6
0 = no interrupt event in framer 7
1 = active interrupt event in framer 7
100054E
Conexant
3-9
CONEXANT [ CONEXANT SYSTEMS, INC ]
