參數(shù)資料
型號: MC92602ZTA
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA196
封裝: MAPBGA-196
文件頁數(shù): 18/98頁
文件大?。?/td> 896K
代理商: MC92602ZTA
MOTOROLA
Chapter 2. Transmitter
2-3
Transmitter Interface Signals
Table 2-1. MC92602 Transmitter Interface Signals
Signal Name
Description
Function
Direction
Active
State
XMIT_x_3 through
XMIT_x_0
Transmit Nibble
If TBIE is low these are 4 bits of uncoded
data to transmit. Bits 3 through 0 on
rising edge of clock. Bits 7 through 4 on
falling edge of clock.
If TBIE is high these 4 bits are coded
data to transmit. Bits 3 through 0 on
rising edge of clock. Bits 8 through 5 on
falling edge of clock.
Input
-
XMIT_x_K
Transmit Control Bit
If TBIE is low this is the “K” (special char)
input on the rising edge of clock and the
IDLE (Idle indicator) on the falling edge
of clock.
If TBIE is high this is data bit 4 on the
rising edge of clock and data bit 9 on the
falling edge of clock
Input
-
XMIT_x_CLK
Channel Transmit Clock
Clock to which transmit interface signals
are timed.
Input
-
XMIT_REF_A
Transmit Interface Clock
Select
Indicates that the transmit interface
signals are timed to XMIT_A_CLK
instead of their own transmit clock.
Input
High
XCVR_x_DISABLE
Transceiver Disable
Indicates that the transmitter and
receiver for this transceiver are disabled.
The link outputs are not driven. (see
Section 2.3.4 for details).
Input
High
TBIE
Ten-Bit Interface Enable
Indicates that pre-coded 10-bit data is at
inputs and to bypass internal 8B/10B
coding.
Input
High
REPE
Repeater Mode Enable
Test feature only. Must be disabled (low)
during normal operation.
Input
High
HSE
Half Speed Enable
When enabled, link is operated at
half-speed. Both data and link interfaces
run at half speed.
Input
High
LBE
Loop Back Enable
Activate digital loopback path, such that
data transmitted is looped back to its
receiver.
Input
High
LBOE
Loop Back Output
Enable
Indicates that link outputs remain active
when LBE is asserted. When LBOE is
low, link outputs are disabled when LBE
is asserted.
Input
High
TST_1, TST_0
Test mode config inputs
Decoded to define various test modes
(see Chapter 6 for details).
Input
-
MEDIA
Media Impedance Select Indicates the impedance of the
transmission media. Low indicates 50
and high indicates 75
.
Input
-
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