User`s guide

LZ87010 Advance User’s Guide I

C Interface

1/15/03 15-9

15.4.6 ICLCNT (I

C Clock Low Time) Register

The ICLCNT register sets the period for the serial clock LOW time.

Table 15-14. ICLCNT Register

BIT 7 6 5 4 3 2 1 0

FIELD L_CNT[7] L_CNT[6] L_CNT[5] L_CNT[4] L_CNT[3] L_CNT[2] L_CNT[1] L_CNT[0]

RESET 00000000

RW RW RW RW RW RW RW RW RW

ADDR 0xBD

Table 15-15. ICLCNT Register Bits

BIT NAME DESCRIPTION

7:0 L_CNT[7:0]

Low Count This register sets the SCL LOW clock time. The LOW period will

be ICLCNT + 3 PCLK periods in 100 kbit/s mode, and ICLCNT + 4 PCLK

cycles in 400 kbit/s mode. The ICLCNT Register must be set before any I

bus transaction takes place to insure proper I/O timing. Note that the value in

this register must be at least 3 for proper I

C operation.