CYP15G0401DXB-BGXC View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
MFG CO.
'CYP15G0401DXB-BGXC' PDF : 53 Pages View PDF
CYP15G0401DXB
CYV15G0401DXB
CYW15G0401DXB
Pin Descriptions (continued)
CYP(V)(W)15G0401DXB Quad HOTLink II Transceiver
Pin Name I/O Characteristics
Signal Description
MASTER
LVTTL Input,
Master Device Select. When LOW, the present device is configured as the master,
static configuration input, and BONDST[1:0] outputs are driven. When HIGH, the present device is configured
internal pull-down
as a slave, and BONDST[1:0] are inputs. MASTER is only interpreted when
configured for quad channel bonding, and the receive parallel interface is clocked by
REFCLK↑.
BOND_ALL
Bidirectional Open Drain, All Channels Bonded Indicator. Active HIGH, wired AND. BOND_ALL pins from all
Internal pull-up
CYP(V)15G0401DXB devices in the same bonding domain must be wired together. After
bonding resolution is completed and when HIGH, all receive channels have detected valid
framing. This output is LOW during the bonding resolution process. This output is driven
only when configured for four channel bonding, and the receive parallel interface is
clocked by REFCLK↑.
BOND_INH
LVTTL Input,
Parallel Bond Inhibit. Active LOW. When asserted (LOW), this signal inhibits the
static configuration input, adjustment of character offsets in all receive channels if the Bonding Sequence has
Internal pull-up
not been detected in all bonded channels. When HIGH, all channels that have
detected the Bonding Sequence are allowed to align their Receive Elasticity Buffer
pipelines. For any channels to bond, the selected master channel must be a member
of the group. When multiple devices are used together, the BOND_INH input on all
parts must be configured the same.
JTAG Interface
TMS
LVTTL Input,
internal pull-up
Test Mode Select. Used to control access to the JTAG Test Modes. If maintained high
for ≥5 TCLK cycles, the JTAG test controller is reset. The TAP controller is also reset
automatically upon application of power to the device.
TCLK
LVTTL Input,
internal pull-down
JTAG Test Clock
TDO
Three-state
LVTTL Output
Test Data Out. JTAG data output buffer which is High-Z while JTAG test mode is not
selected.
TDI
LVTTL Input, internal pull-up Test Data In. JTAG data input port.
Power
VCC
GND
+3.3V Power
Signal and power ground for all internal circuits.
CYP(V)(W)15G0401DXB HOTLink II Operation
The CYP(V)(W)15G0401DXB is a highly configurable device
designed to support reliable transfer of large quantities of data,
using high-speed serial links, from one or multiple sources to
one or multiple destinations. This device supports four
single-byte or single-character channels that may be
combined to support transfer of wider buses.
CYP(V)(W)15G0401DXB Transmit Data Path
Operating Modes
The transmit path of the CYP(V)(W)15G0401DXB supports
four character-wide data paths. These data paths are used in
multiple operating modes as controlled by the TXMODE[1:0]
inputs.
Input Register
The bits in the Input Register for each channel support
different assignments, based on if the character is unencoded,
encoded with two control bits, or encoded with three control
bits. These assignments are shown in Table 1. Each Input
Register captures a minimum of eight data bits and two control
bits on each input clock cycle. When the Encoder is bypassed,
the TXCTx[1:0] control bits, are part of the preencoded 10-bit
character.
When the Encoder is enabled (TXMODE[1] ≠ LOW), the
TXCTx[1:0] bits are interpreted along with the associated
TXDx[7:0] character to generate the specific 10-bit trans-
mission character. When TXMODE[0] ≠ HIGH, an additional
special character select (SCSEL) input is also captured and
interpreted. This SCSEL input is used to modify the encoding
of the associated characters. When the transmit Input
Registers are clocked by a common clock (TXCLKA↑ or
REFCLK↑), this SCSEL input can be changed on a
clock-by-clock basis and affects all four channels.
When operated with a separate input clock on each transmit
channel, this SCSEL input is sampled synchronous to
TXCLKA↑. While the value on SCSEL still affects all channels,
it is interpreted when the character containing it is read from
the transmit Phase-align Buffer (where all four paths are inter-
nally clocked synchronously).
Document #: 38-02002 Rev. *L
Page 15 of 53
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