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PCK2002 Datasheet(PDF) 7 Page - NXP Semiconductors |
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PCK2002 Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 12 page Philips Semiconductors Product data PCK2002 0–300 MHz I2C 1:18 clock buffer 2001 Jul 19 7 SERIAL CONFIGURATION MAP The serial bits will be read by the clock buffer in the following order: Byte 0 – Bits 7, 6, 5, 4, 3, 2, 1, 0 Byte 1 – Bits 7, 6, 5, 4, 3, 2, 1, 0 Byte 2 – Bits 7, 6, 5, 4, 3, 2, 1, 0 All unused register bits (Reserved and N/A) should be desined as “Don’t Care”. It is expected that the controller will force all of these bits to a “0” level. All register bits labeled “Initialize to 0” must be written to zero during intialization. Failure to do so may result in a higher than normal operating current. The controller will read back the last written value. Byte 0: SDRAM Output active/inactive register 1 = enable; 0 = disable BIT(S) AFFECTED PIN CONTROL FUNCTION BIT CONTROL BIT(S) PIN NO. PIN NAME CONTROL FUNCTION 0 1 7 18 BUF_OUT7 Clock Output Disable Low Active 6 17 BUF_OUT6 Clock Output Disable Low Active 5 14 BUF_OUT5 Clock Output Disable Low Active 4 13 BUF_OUT4 Clock Output Disable Low Active 3 9 BUF_OUT3 Clock Output Disable Low Active 2 8 BUF_OUT2 Clock Output Disable Low Active 1 5 BUF_OUT1 Clock Output Disable Low Active 0 4 BUF_OUT0 Clock Output Disable Low Active NOTE: 1. At power up all SDRAM outputs are enabled and active. Program all reserved bits to “0”. Byte 1: SDRAM Output active/inactive register 1 = enable; 0 = disable BIT(S) AFFECTED PIN CONTROL FUNCTION BIT CONTROL BIT(S) PIN NO. PIN NAME CONTROL FUNCTION 0 1 7 45 BUF_OUT15 Clock Output Disable Low Active 6 44 BUF_OUT14 Clock Output Disable Low Active 5 41 BUF_OUT13 Clock Output Disable Low Active 4 40 BUF_OUT12 Clock Output Disable Low Active 3 36 BUF_OUT11 Clock Output Disable Low Active 2 35 BUF_OUT10 Clock Output Disable Low Active 1 32 BUF_OUT9 Clock Output Disable Low Active 0 31 BUF_OUT8 Clock Output Disable Low Active NOTE: 1. At power up all SDRAM outputs are enabled and active. Program all reserved bits to “0”. |
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