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参数资料
型号： SI3220PPTX-EVB
厂商： Silicon Laboratories Inc
文件页数： 108/112页
文件大小： 0K
描述： BOARD EVAL W/DISCRETE INTERFACE
标准包装： 1
系列： ProSLIC®
主要目的： 接口，模拟前端（AFE）
已用 IC / 零件： Si3220
已供物品： 板，CD
Si3220/25 Si3200/02
Rev. 1.3
95
Not
Recommended
fo
r N
ew
D
esi
gn
s
might be set incorrectly. If this problem persists after the
power alarm settings are verified, a system fault is
probable, and the user should take measures to
diagnose the problem.
3.31.10. Upstream (Transmit) SC Channel Byte
The upstream SC channel byte looks similar to the
downstream
SC
channel
byte
except
that
the
information quickly transfers the most time-critical
information from the Dual ProSLIC to the GCI bus. Each
upstream SC channel byte transfer from the Dual
ProSLIC lasts for at least two consecutive frames to
represent a valid transfer. The upstream C/I bits are
defined as follows:
CI2A, CI1A, CI0A
Monitors status data for channel A
CI2B, CI1B, CI0B
Monitors status data for channel B
MR, MX
Monitor channel handshake bits
(see Monitor Channel section)
Table 50. Automatic Linefeed State Transitions
Initiating Action
Automatic Linefeed State
Transition
Detection/Control Bits
Interrupt Enable/Status
Bits
Loop closure detected On-hook active
off-hook active,
Off-hook active
on-hook active
LCR (Register 9)
LOOPE, LOOPS
(Register 16/19)
Ring trip detected
Ringing
off-hook active
RTP (Register 9)
RTRIPE, RTRIPS
(Register 16/19)
Ringing burst
cadence
Ringing
on-hook transmission
On-hook transmission
ringing
T1EN, T2EN
(Register 23)
RINGT1E, RINGT2E,
RINGT1S, RINGT2S
(Register 15/18)
Power alarm detected
Any state
open
PQ1DL (RAM 50)
PQ1E, PQ1S
(Registers 17/20)
Table 51. Monitored Data via Upstream SC Channel C/I Bits
C/I Bit
Information Provided
Mirrored Register Bits
Context
CI2A
Interrupt information on
channel A
IRQ0[0]+
IRQ0[1]+
IRQ0[2]
CI2A = 0: No interrupt on channel A
CI2A = 1: Interrupt present on channel A
CI1A
Hook status information
on channel A
LCRRTP[0]
(LCR bit)
CI1A = 0: Channel A is on-hook
CI1A = 1: Channel A is off-hook
CI0A
Ground key information
on channel A
LCRRTP[2]
(LONGHI bit)
CI0A = 0: No longitudinal current detected
CI0A = 1: Longitudinal current detected in chan-
nel A
CI2B
Interrupt information on
channel B
IRQ0[4]+
IRQ0[5]+
IRQ0[6]
CI2A = 0: No interrupt on channel B
CI2A = 1: Interrupt present on channel B
CI1B
Hook status information
on channel B
LCRRTP[0]
(LCR bit)
CI1A = 0: Channel B is on-hook
CI1A = 1: Channel B is off-hook
CI0B
Ground key information
on channel B
LCRRTP[2]
(LONGHI bit)
CI0A = 0: No longitudinal current detected
CI0A = 1: Longitudinal current detected in chan-
nel B
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