MAX9215 Maxim Integrated Products, MAX9215 Datasheet - Page 9

• Manufacturer Part Number: MAX9215
• Description: (MAX9209 - MAX9215) Programmable DC-Balanced 21-Bit Serializers
• Manufacturer: Maxim Integrated Products

Figure 5. Non-DC-Balanced Mode LVDS Output Pulse Position Measurement
The MAX9209/MAX9211 operate at a parallel clock fre-
quency of 8MHz to 34MHz in DC-balanced mode and
10MHz to 40MHz in non-DC-balanced mode. The
MAX9213/MAX9215 operate at a parallel clock frequen-
cy of 16MHz to 66MHz in DC-balanced mode and
20MHz to 85MHz in non-DC-balanced mode.
DC-balanced or non-DC-balanced operation is con-
trolled by the DCB/NC pin (see Table 1). In non-DC-
balanced mode, each channel serializes 7 bits every
cycle of the parallel clock. In DC-balanced mode, 9 bits
are serialized every clock cycle (7 data bits + 2 DC-bal-
ance bits). The highest data rate in DC-balanced mode
for the MAX9213 or MAX9215 is 66MHz x 9 =
594Mbps. In non-DC-balanced mode, the maximum
data rate is 85MHz x 7 = 595Mbps. A bit time is 1 divid-
ed by the data rate, for example, 1/595Mbps = 1.68ns.
Through data coding, the DC-balance circuits limit the
imbalance of ones and zeros transmitted on each chan-
nel. If +1 is assigned to each binary one transmitted
and -1 is assigned to each binary zero transmitted, the
(SINGLE ENDED)
(SINGLE ENDED)
(SINGLE ENDED)
(DIFFERENTIAL)
_______________________________________________________________________________________
TxCLK OUT
TxOUT2
TxOUT1
TxOUT0
Detailed Description
TPPos0
TPPos1
TPPos2
TPPos3
TPPos4
TPPos5
TPPos6
TxIN15
TxIN8
TxIN1
CYCLE N - 1
TxIN14
TxIN7
TxIN0
DC Balance
TxIN20
TxIN13
TxIN6
Programmable DC-Balanced
TxIN19
TxIN12
TxIN5
variation in the running sum of assigned values is
called the digital sum variation (DSV). The maximum
DSV for the MAX9209/MAX9211/MAX9213/MAX9215
Table 1. DC-Balance Programming
MAX9209
MAX9211
MAX9213
MAX9215
TxIN18
TxIN11
TxIN4
DEVICE
CYCLE N
TxIN17
TxIN10
TxIN3
High or open
High or open
Low or open
Low or open
21-Bit Serializers
DCB/NC
High
High
TxIN16
Low
Low
TxIN9
TxIN2
TxIN15
TxIN8
TxIN1
OPERATING
DC balanced
DC balanced
DC balanced
DC balanced
balanced
balanced
balanced
balanced
Non-DC
Non-DC
Non-DC
Non-DC
MODE
TxIN14
TxIN7
TxIN0
FREQUENCY
OPERATING
10 to 40
10 to 40
16 to 66
20 to 85
16 to 66
20 to 85
8 to 34
8 to 34
(MHz)
9