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參數(shù)資料
| 型號： | CYV15G0403TB-BGC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Independent Clock Quad HOTLink II⑩ Serializer |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PBGA256 |
| 封裝： | 27 X 27 MM, 1.57 MM HEIGHT, TBGA-256 |
| 文件頁數(shù)： | 11/21頁 |
| 文件大?。?/td> | 324K |
| 代理商： | CYV15G0403TB-BGC |
CYV15G0403TB
Document #: 38-02104 Rev. *C
Page 11 of 21
0, 1, 3, 4, 6, 7, 9, and 10) are the static control latches. The
third row of latches for each channel (address numbers 2, 5,
8, and 11) are the dynamic control latches that are associated
with enabling dynamic functions within the device.
Latch Bank 14 is also useful for those users that do not need
the latch-based programmable feature of the device. This
latch bank could be used in those applications that do not need
to modify the default value of the static latch banks, and that
can afford a global (i.e., not independent) control of the
dynamic signals. In this case, this feature becomes available
when ADDR[3:0] is left unchanged with a value of “1110” and
WREN is left asserted. The signals present in DATA[4:0] effec-
tively become global control pins, and for the latch banks 2, 5,
8 and 11.
Static Latch Values
There are some latches in the table that have a static value
(i.e. 1, 0, or X). The latches that have a ‘1’ or ‘0’ must be
configured with their corresponding value each time that their
associated latch bank is configured. The latches that have an
‘X’ are don’t cares and can be configured with any value.
Table 2. Device Configuration and Control Latch Descriptions
Name
TXCKSELA
TXCKSELB
TXCKSELC
TXCKSELD
Signal Description
Transmit Clock Select
. The initialization value of the TXCKSELx latch = 1. TXCKSELx selects the clock
source used to write data into the Transmit Input Register. When TXCKSELx = 1, the associated input
register TXDx[9:0] is clocked by REFCLKx
↑.
In this mode, the phase alignment buffer in the transmit path
is bypassed. When TXCKSELx = 0, the associated TXCLKx
↑
is used to clock in the input register
TXDx[9:0].
Transmit PLL Clock Rate Select
. The initialization value of the TXRATEx latch = 0. TXRATEx is used
to select the clock multiplier for the Transmit PLL. When TXRATEx = 0, each transmit PLL multiples the
associated REFCLKx± input by 10 to generate the serial bit-rate clock. When TXRATEx = 0, the
TXCLKOx output clocks are full-rate clocks and follow the frequency and duty cycle of the associated
REFCLKx± input. When TXRATEx = 1, each Transmit PLL multiplies the associated REFCLKx± input by
20 to generate the serial bit-rate clock. When TXRATEx = 1, the TXCLKOx output clocks are twice the
frequency rate of the REFCLKx± input. When TXCLKSELx = 1 and TXRATEx = 1, the Transmit Data
Inputs are captured using both the rising and falling edges of REFCLKx. TXRATEx = 1 and SPDSELx =
LOW, is an invalid state and this combination is reserved.
Transmit Bist Disabled
. The initialization value of the TXBISTx latch = 1. TXBISTx selects if the transmit
BIST is disabled or enabled. When TXBISTx = 1, the transmit BIST function is disabled. When
TXBISTx = 0, the transmit BIST function is enabled.
TXRATEA
TXRATEB
TXRATEC
TXRATED
TXBISTA
TXBISTB
TXBISTC
TXBISTD
OE2A
OE2B
OE2C
OE2D
Secondary Differential Serial Data Output Driver Enable
. The initialization value of the OE2x latch =
0. OE2x selects if the OUT2x± secondary differential output drivers are enabled or disabled. When OE2x
= 1, the associated serial data output driver is enabled allowing data to be transmitted from the transmit
shifter. When OE2x = 0, the associated serial data output driver is disabled. When a driver is disabled via
the configuration interface, it is internally powered down to reduce device power. If both serial drivers for
a channel are in this disabled state, the associated internal logic for that channel is also powered down.
A device reset (RESET sampled LOW) disables all output drivers.
Primary Differential Serial Data Output Driver Enable
. The initialization value of the OE1x latch = 0.
OE1x selects if the OUT1x± primary differential output drivers are enabled or disabled. When OE1x = 1,
the associated serial data output driver is enabled allowing data to be transmitted from the transmit shifter.
When OE1x = 0, the associated serial data output driver is disabled. When a driver is disabled via the
configuration interface, it is internally powered down to reduce device power. If both serial drivers for a
channel are in this disabled state, the associated internal logic for that channel is also powered down.
A device reset (RESET sampled LOW) disables all output drivers.
Transmit Clock Phase Alignment Buffer Reset
. The initialization value of the PABRSTx latch = 1. The
PABRSTx is used to re-center the Transmit Phase Align Buffer. When the configuration latch PABRSTx
is written as a 0, the phase of the TXCLKx input clock relative to its associated REFCLKx+/- is initialized.
PABRST is an asynchronous input, but is sampled by each TXCLKx
↑
to synchronize it to the internal
clock domain. PABRSTx is a self clearing latch. This eliminates the requirement of writing a 1 to complete
the initialization of the Phase Alignment Buffer.
Global Enable
. The initialization value of the GLENx latch = 1. The GLENx is used to reconfigure several
channels simultaneously in applications where several channels may have the same configuration. When
GLENx = 1 for a given address, that address is allowed to participate in a global configuration. When
GLENx = 0 for a given address, that address is disabled from participating in a global configuration.
Force Global Enable
. The initialization value of the FGLENx latch is NA. The FGLENx latch forces a
GLobal ENable no matter what the setting is on the GLENx latch. If FGLENx = 1 for the associated Global
channel, FGLEN forces the global update of the target latch banks.
OE1A
OE1B
OE1C
OE1D
PABRSTA
PABRSTB
PABRSTC
PABRSTD
GLEN[11..0]
FGLEN[2..0]
[+] Feedback
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