TABLE 25: C
參數(shù)資料
型號： XRT73R12IB-L
廠商： Exar Corporation
文件頁數(shù)： 64/89頁
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝： 40
類型： 線路接口裝置（LIU）
驅(qū)動器/接收器數(shù)： 12/12
規(guī)程： DS3，E3，STS-1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 420-LBGA 裸露焊盤
供應(yīng)商設(shè)備封裝： 420-TBGA（35x35）
包裝： 托盤
XRT73R12
64
REV. 1.0.3
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
TABLE 25: CHANNEL LEVEL INTERRUPT STATUS REGISTER - CR225 (ADDRESS LOCATION = 0XE1)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved Reserved
Channel 11
Interrupt
Status
Channel 10
Interrupt
Status
Channel 9
Interrupt
Status
Channel 8
Interrupt
Status
Channel 7
Interrupt
Status
Channel 6
Interrupt
Status
R/O
BIT
NUMBER
NAME
TYPE
DESCRIPTION
7, 6
Reserved
5
4
3
2
1
0
Channel 11 Interrupt Status
Channel 10 Interrupt Status
Channel 9 Interrupt Status
Channel 8 Interrupt Status
Channel 7 Interrupt Status
Channel 6 Interrupt Status
R/O
Channel n Interrupt Status Bit:
This READ-ONLY bit-field indicates whether the XRT73R12 has a
pending Channel n-related interrupt that is awaiting service. The last
six channels are serviced through this location and the other six at
address 0x61. These two registers are used by the Host to identify the
source channel of an active interrupt.
0 - Indicates that there is NO Channel n-related Interrupt awaiting ser-
vice.
1 - Indicates that there is at least one Channel n-related Interrupt
awaiting service. In this case, the user's Interrupt Service routine
should be written such that the Microprocessor will now proceed to
read out the contents of the Source Level Interrupt Status Register -
Channel n (Address Locations = 0xn2) to determine the exact source
of the interrupt request.
NOTE: Once this bit-field is set to "1", it will not be cleared back to "0"
until the user has read out the contents of the Source-Level
Interrupt Status Register bit, that corresponds to the interrupt
request channel.
TABLE 26: DEVICE/PART NUMBER REGISTER - CR110 (ADDRESS LOCATION = 0X6E)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Part Number ID Value
R/O
0
1
0
1
0
BIT NUMBER
NAME
TYPE
DEFAULT
VALUE
DESCRIPTION
7 - 0
Part Number ID
Value
R/O
0x68
Part Number ID Value:
This READ-ONLY register contains a unique value for the
XRT73R12. This value will always be 0x68.
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